Products

Suppliers
Filter Gallery
2,289

Fbt Fiber Optic Coupler

Products
Fiber Optic Optical Fiber Cable Fiber Optic Patch Cord Fiber Optic Patch Cable Fiber Optic Cord Fiber Optic Adapter

Sorry! No matches were found.

0.9mm 1X2 Steel Tube Fbt Coupler Fiber Optical Optic Splitter

0.9mm 1X2 Steel Tube Fbt Coupler Fiber Optical Optic Splitter

US $ 0.514-33.088 / Piece FOB
1 Piece (MOQ)
More
Main Products: Cable, CPRI, FBT Coupler, LGX Box, Patch Cord, Pigtail, PLC Splitter, FTTH
Contact Supplier
Audited Supplier
Fujian Gui Comm-Tech Co., Ltd.

Manufacturer/Factory & Trading Company

Fujian, China Since 2024
Chat Now Send Inquiry
Opelink/OEM 1X3 Fiber Optic Fbt Coupler with Factory Price

Opelink/OEM 1X3 Fiber Optic Fbt Coupler with Factory Price

US $ 2-2.9 / Piece FOB
1 Piece (MOQ)
More
Type : Fiber Optic Splitter&Coupler
Contact Supplier
Audited Supplier
Shenzhen Opelink Communication Technology Co., Ltd.

Trading Company

Guangdong, China Since 2016
Chat Now Send Inquiry
Manufacturer Price 30/70 1X2 Fbt Copler Splitter Fiber Optic Coupler

Manufacturer Price 30/70 1X2 Fbt Copler Splitter Fiber Optic Coupler

US $ 0.85-1.58 / Piece FOB
100 Pieces (MOQ)
More
Main Products: Fiber Optic Patch Cord, Fiber Optic Adapter, Fiber Optic Attenuator, Fiber Opitc Cable, Fiber Optic Box, MPO Fiber Optic Cable Assembly, Fiber Opti PLC Splitter, Fiber Optic Fast Connector
Contact Supplier
Audited Supplier
DYS Fiber Optic Limited.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2014
Chat Now Send Inquiry
FTTH Wdm Tube Splitter Fiber Optic Coupler 1X2 Sc APC Upc Fiber Splitter Mini Fbt Coupler

FTTH Wdm Tube Splitter Fiber Optic Coupler 1X2 Sc APC Upc Fiber Splitter Mini Fbt Coupler

US $ 1.4-33 / Piece FOB
1,000 Pieces (MOQ)
More
Type : Fiber Optic Splitter&Coupler
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
FTTH Fiber Optic Single Mode Single Window Fbt Coupler

FTTH Fiber Optic Single Mode Single Window Fbt Coupler

US $ 4.5-29.99 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Patch Cord, Fiber Terminal Box, Fiber Adapter
Contact Supplier
Audited Supplier
FIBERLINK COMMUNICATION LIMITED

Trading Company

Guangdong, China Since 2017
Chat Now Send Inquiry
1X2 Fbt Coupler Optical Fiber Optic Steel Tube Sm 50/50 to 1/99

1X2 Fbt Coupler Optical Fiber Optic Steel Tube Sm 50/50 to 1/99

US $ 0.514-100 / Piece FOB
1 Piece (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
Fujian Gui Comm-Tech Co., Ltd.

Manufacturer/Factory & Trading Company

Fujian, China Since 2024
Chat Now Send Inquiry
Fbt Splitter/ Fbt Fiber Coupler 1/99 2/98 3/97 40/60 30/70 20/80 10/90 Ratio Fiber Optic 1X2 Splitter 90/10 Split Ratio

Fbt Splitter/ Fbt Fiber Coupler 1/99 2/98 3/97 40/60 30/70 20/80 10/90 Ratio Fiber Optic 1X2 Splitter 90/10 Split Ratio

US $ 0.7-1.5 / Piece FOB
50 Pieces (MOQ)
More
Main Products: Network Cable, Alarm Cable, Optical Fiber Cable, Coaxial Cable, Telephone Cable, Speaker Cable, Fire Alarm Cable, Electric Cable, Network Components, Fiber Components
Contact Supplier
Audited Supplier
Shenzhen Sinet Industrial Co., Ltd.

Guangdong, China Since 2022
Chat Now Send Inquiry
1X4 Singlemode 0.9mm Dual Window Fiber Optic Fbt Coupler

1X4 Singlemode 0.9mm Dual Window Fiber Optic Fbt Coupler

US $ 1.25 / Piece FOB
1 Piece (MOQ)
More
Certification : RoHS, UL, CE, ISO9001, CCC
Contact Supplier
Audited Supplier
Takfly Communications Co., Ltd.

Guangdong, China Since 2013
Chat Now Send Inquiry
1× 2 Mini Tube Fbt Fiber Optic Splitter Coupler

1× 2 Mini Tube Fbt Fiber Optic Splitter Coupler

US $ 1.55-2.85 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Fiber Optic Patch Cord, Fiber Optic Adapter, Fiber Optic Connector, Fiber Optic Attenuator, Fiber Faceplate, Fiber Terminal Box, Fiber Tools
Contact Supplier
Audited Supplier
HOLIGHT Fiber Optic Co., Ltd.

Guangdong, China Since 2016
Chat Now Send Inquiry
Kexint Multimode Fbt 1*2 Coupler Wdm Fiber Optic 50/125 850nm

Kexint Multimode Fbt 1*2 Coupler Wdm Fiber Optic 50/125 850nm

US $ 8.43 / Piece FOB
10 Pieces (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
Shenzhen kexint Technology Co., Ltd

Manufacturer/Factory & Trading Company

Guangdong, China Since 2024
Chat Now Send Inquiry
1*3 Fiber Optic Fbt Coupler in ABS Cassette

1*3 Fiber Optic Fbt Coupler in ABS Cassette

US $ 9.5-10 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patch Cord
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
1*2 Fiber Optic Fbt Coupler with Steel Tube

1*2 Fiber Optic Fbt Coupler with Steel Tube

US $ 8-10 / Piece FOB
100 Pieces (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
Related Searches
Splitter Optic Fiber Adaptor Optical Splitter Fiber Optic Cable Fiber Optic Equipment Fiber Optic Products
Fiber Optic Equipment Fiber Connector Optical Fiber Cable Tools Radio & TV Broadcasting Metal Processing Machinery Parts
Single-Mode Fiber Optic Equipment Multi-Mode Fiber Optic Equipment Fiber Optic Transmission System Fiber Optic Switching Equipment Fiber Optic Access Equipment FTTH Equipment
Fbt Fiber Optic Coupler Fiber Optic Coupler Without Connectors Bare Fiber

Fbt Fiber Optic Coupler Fiber Optic Coupler Without Connectors Bare Fiber

US $ 7.5-12.9 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patch Cord, Fiber Optic Adapter, Fiber Optic Attenuator, Fiber Opitc Cable, Fiber Optic Box, MPO Fiber Optic Cable Assembly, Fiber Opti PLC Splitter, Fiber Optic Fast Connector
Contact Supplier
Audited Supplier
DYS Fiber Optic Limited.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2014
Chat Now Send Inquiry
Gpon Epon 1X2 Fiber Optic Fbt Coupler

Gpon Epon 1X2 Fiber Optic Fbt Coupler

US $ 1.99-3.5 / Piece FOB
10 Pieces (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
Takfly Communications Co., Ltd.

Guangdong, China Since 2013
Chat Now Send Inquiry
1*4 0.9mm with Steel Tube Fiber Optic Fbt Coupler

1*4 0.9mm with Steel Tube Fiber Optic Fbt Coupler

US $ 23-26 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patch Cord
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
1X2 Fiber Optic Fbt Coupler Factory with FC/APC Sm Pigtail

1X2 Fiber Optic Fbt Coupler Factory with FC/APC Sm Pigtail

US $ 1.73-1.88 / Piece FOB
1 Piece (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
Shenzhen Opelink Communication Technology Co., Ltd.

Trading Company

Guangdong, China Since 2016
Chat Now Send Inquiry
FTTH Fiber Optic Fbt Coupler 1X2 Optical Fiber Splitter 1*2 Coupler

FTTH Fiber Optic Fbt Coupler 1X2 Optical Fiber Splitter 1*2 Coupler

US $ 1.4-33 / Piece FOB
1,000 Pieces (MOQ)
More
Main Products: PLC Splitter, Fast Connector, Fiber Optic Patch Cord, Fiber Optic Pigtail, Fiber Optic Adapter, Fiber Optic Splice Closure, Fiber Optice Terminal Box Fbt, Fiber Optical Cross Connect Cabinets, Telecom Cabinets, ODF
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
Fiber Optic PLC Splitter Singlemode Tree and Star Fbt Coupler

Fiber Optic PLC Splitter Singlemode Tree and Star Fbt Coupler

US $ 4.5-29.99 / Piece FOB
1 Piece (MOQ)
More
Condition : New
Contact Supplier
Audited Supplier
FIBERLINK COMMUNICATION LIMITED

Trading Company

Guangdong, China Since 2017
Chat Now Send Inquiry
FTTH 1310/1550nm Sc APC Fiber Optic Fbt Coupler

FTTH 1310/1550nm Sc APC Fiber Optic Fbt Coupler

US $ 3.09-4.5 / Piece FOB
1 Piece (MOQ)
More
Main Products: PLC Splitter, Fast Connector, Fiber Optic Patch Cord, Fiber Optic Pigtail, Fiber Optic Adapter, Fiber Optic Splice Closure, Fiber Optice Terminal Box Fbt, Fiber Optical Cross Connect Cabinets, Telecom Cabinets, ODF
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
FTTH Fbt Splitter Sc APC Upc Connector Fiber Optic Fbt Coupler

FTTH Fbt Splitter Sc APC Upc Connector Fiber Optic Fbt Coupler

US $ 1.4-33 / Piece FOB
1,000 Pieces (MOQ)
More
Type : Fiber Optic Splitter&Coupler
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
Related Videos
  • What is 0.9mm 1X2 Steel Tube Fbt Coupler Fiber Optical Optic Splitter
    What is 0.9mm 1X2 Steel Tube Fbt Coupler Fiber Optical Optic Splitter
    US $ 0.514-33.088 /Piece
    1 Piece (MOQ)
    Contact Supplier
  • What is Opelink/OEM 1X3 Fiber Optic Fbt Coupler with Factory Price
    What is Opelink/OEM 1X3 Fiber Optic Fbt Coupler with Factory Price
    US $ 2-2.9 /Piece
    1 Piece (MOQ)
    Contact Supplier
  • What is Manufacturer Price 30/70 1X2 Fbt Copler Splitter Fiber Optic Coupler
    What is Manufacturer Price 30/70 1X2 Fbt Copler Splitter Fiber Optic Coupler
    US $ 0.85-1.58 /Piece
    100 Pieces (MOQ)
    Contact Supplier
  • What is 1X2 Fbt Coupler Optical Fiber Optic Steel Tube Sm 50/50 to 1/99
    What is 1X2 Fbt Coupler Optical Fiber Optic Steel Tube Sm 50/50 to 1/99
    US $ 0.514-100 /Piece
    1 Piece (MOQ)
    Contact Supplier
1X5 Fbt Coupler Splitter: Fiber Optic Fbt Coupler Supplier - Opelink

1X5 Fbt Coupler Splitter: Fiber Optic Fbt Coupler Supplier - Opelink

US $ 4.3-5.4 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic PLC Splitter/Coupler, Optical CWDM/DWDM/OADM/AWG, FTTH Drop Fiber Optic Cable, Indoor/Outdoor Fiber Optic Cable, Fiber Optic Patchcord/Patch Cable/Jumper/Pigtail, Fiber Optic Connector/Fast(Quick) Connector, Fiber Optic Adaptor/Adapter, Fiber Optic Attenuator, Optical Circulator/Islator, Optical Fiber Indoor Duplex(Simplex) Cable
Contact Supplier
Audited Supplier
Shenzhen Opelink Communication Technology Co., Ltd.

Trading Company

Guangdong, China Since 2016
Chat Now Send Inquiry
FTTH Optical Coupler Fiber Optic Coupler 1X2 Wdm Fiber Splitter Fbt Coupler

FTTH Optical Coupler Fiber Optic Coupler 1X2 Wdm Fiber Splitter Fbt Coupler

US $ 1.4-33 / Piece FOB
1,000 Pieces (MOQ)
More
Certification : CE, ISO, RoHS
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
1*2 Fiber Optic Fbt Coupler with ABS Cassette

1*2 Fiber Optic Fbt Coupler with ABS Cassette

US $ 6.5-8 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patch Cord
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry

Not exactly what you want?

Post Sourcing Request

About Fbt Fiber Optic Coupler FAQ

  • QWhy opt for wholesale purchase of Fiber Optic Equipment?

    Enhance your Fiber Optic Equipment setup with our premium Fbt Fiber Optic Coupler.Acquiring Fiber Optic Equipment in bulk through wholesale offers cost advantages, bulk pricing, and customization options. Purchasing in large quantities enables businesses to benefit from discounts and ensures availability of essential products. Partnering with reliable suppliers ensures consistency and responsiveness.

  • QWhat types of Fiber Optic Equipment are commonly used in the industry?

    Our Fbt Fiber Optic Coupler offers exceptional quality within the Fiber Optic Equipment category.Fiber Optic Equipment includes cables, connectors, transceivers, patch panels, and splicers. The industry demands high-quality equipment for reliable network connectivity. Consult a trustworthy manufacturer for expert advice on the most suitable products for your specific applications.

  • QHow can I evaluate the reliability of suppliers for Fiber Optic Equipment in China?

    Discover the perfect Fiber Optic Equipment addition with our Fbt Fiber Optic Coupler.When assessing suppliers in China, consider factors like certification, production capacity, and client testimonials. Check for compliance with industry standards and ensure transparent communication. Choosing a reputable supplier guarantees quality products and dependable service.

Fiber Optic Fbt Couplers for FTTH Equiptment Connection

Fiber Optic Fbt Couplers for FTTH Equiptment Connection

US $ 5.5-6 / Piece FOB
1 Piece (MOQ)
More
Core : Multicore
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
FTTH Fiber Optic Fbt Oupler 1X2 Sm LC Optical Fiber Splitter 1*2 Coupler

FTTH Fiber Optic Fbt Oupler 1X2 Sm LC Optical Fiber Splitter 1*2 Coupler

US $ 1.4-33 / Piece FOB
1,000 Pieces (MOQ)
More
Main Products: PLC Splitter, Fast Connector, Fiber Optic Patch Cord, Fiber Optic Pigtail, Fiber Optic Adapter, Fiber Optic Splice Closure, Fiber Optice Terminal Box Fbt, Fiber Optical Cross Connect Cabinets, Telecom Cabinets, ODF
Contact Supplier
Audited Supplier
Ningbo Fibconet Communication Technology Co., Ltd.

Zhejiang, China Since 2020
Chat Now Send Inquiry
China Factory Price Opelink/OEM 1X3 Fiber Optic Fbt Coupler

China Factory Price Opelink/OEM 1X3 Fiber Optic Fbt Coupler

US $ 2-2.9 / Piece FOB
1 Piece (MOQ)
More
Type : Fiber Optic Splitter&Coupler
Contact Supplier
Audited Supplier
Shenzhen Opelink Communication Technology Co., Ltd.

Trading Company

Guangdong, China Since 2016
Chat Now Send Inquiry
2*2 ABS Box Fiber Optic Fbt Coupler

2*2 ABS Box Fiber Optic Fbt Coupler

US $ 7-10 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patch Cord
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
China Opelink/OEM 1X2 Fiber Optic Fbt Coupler with Good Price

China Opelink/OEM 1X2 Fiber Optic Fbt Coupler with Good Price

US $ 1.73-1.88 / Piece FOB
1 Piece (MOQ)
More
Type : Fiber Optic Splitter&Coupler
Contact Supplier
Audited Supplier
Shenzhen Opelink Communication Technology Co., Ltd.

Trading Company

Guangdong, China Since 2016
Chat Now Send Inquiry
ISO9001 ISO14001 FTTH 0.9mm G657A Fbt Fiber Optic Coupler

ISO9001 ISO14001 FTTH 0.9mm G657A Fbt Fiber Optic Coupler

US $ 3-4.5 / Piece FOB
10 Pieces (MOQ)
More
Main Products: Fiber Optic Patchcord, Optical Adapter, Optic Attenuator, CWDM/DWDM, Media Converter, Optical Fiber Cable, Poe Switch, PLC Splitter, MPO/MTP, Fiber Optic Distribution Box
Contact Supplier
Audited Supplier
Takfly Communications Co., Ltd.

Guangdong, China Since 2013
Chat Now Send Inquiry
Mini Steel Tube Fbt Splitter 1X2 Split Ratio 10/90 Optical Coupler

Mini Steel Tube Fbt Splitter 1X2 Split Ratio 10/90 Optical Coupler

US $ 0.85-1.58 / Piece FOB
100 Pieces (MOQ)
More
Certification : CE, ISO, RoHS, GS
Contact Supplier
Audited Supplier
DYS Fiber Optic Limited.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2014
Chat Now Send Inquiry
1X3/4/5 Single Mode Fiber Optical Coupler

1X3/4/5 Single Mode Fiber Optical Coupler

US $ 6.5 / Piece FOB
1 Piece (MOQ)
More
Main Products: CATV Products, Fiber Optic Passive, Satellite Equipment, Fiber Optical Transmission Equipment, Digital Headend Equipment
Contact Supplier
Audited Supplier
Hangzhou Softel Optic Co., Ltd.

Trading Company

Zhejiang, China Since 2009
Chat Now Send Inquiry
Factory Wholesale Fiber Optic FTTH Splitter Fiber Steel Tube Type 1X2 Fbt Optical Coupler with Sc/APC Connector

Factory Wholesale Fiber Optic FTTH Splitter Fiber Steel Tube Type 1X2 Fbt Optical Coupler with Sc/APC Connector

US $ 1.941-33.971 / Piece FOB
1 Piece (MOQ)
More
Customized : Non-Customized
Contact Supplier
Audited Supplier
Hangzhou DAYTAI Network Technologies Co., Ltd.

Zhejiang, China Since 2014
Chat Now Send Inquiry
1310/1490/1550nm Fiber Optic Fbt Coupler

1310/1490/1550nm Fiber Optic Fbt Coupler

US $ 1-1.5 / Piece FOB
1 Piece (MOQ)
More
Main Products: Fiber Optic Patchcord, Optical Adapter, Optic Attenuator, CWDM/DWDM, Media Converter, Optical Fiber Cable, Poe Switch, PLC Splitter, MPO/MTP, Fiber Optic Distribution Box
Contact Supplier
Audited Supplier
Takfly Communications Co., Ltd.

Guangdong, China Since 2013
Chat Now Send Inquiry
1*3 Fiber with ABS Cassette Optic Fbt Coupler

1*3 Fiber with ABS Cassette Optic Fbt Coupler

US $ 23-26 / Piece FOB
1 Piece (MOQ)
More
Certification : RoHS, ISO9001
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
(Same price with different split ratio) 1*2 Fbt Splitter/Coupler Form 1/99 to 50/50

(Same price with different split ratio) 1*2 Fbt Splitter/Coupler Form 1/99 to 50/50

US $ 0.7-1.5 / Piece FOB
50 Pieces (MOQ)
More
Main Products: Network Cable, Alarm Cable, Optical Fiber Cable, Coaxial Cable, Telephone Cable, Speaker Cable, Fire Alarm Cable, Electric Cable, Network Components, Fiber Components
Contact Supplier
Audited Supplier
Shenzhen Sinet Industrial Co., Ltd.

Guangdong, China Since 2022
Chat Now Send Inquiry
1*3 Fiber Optic Fbt Coupler

1*3 Fiber Optic Fbt Coupler

US $ 8-10 / Piece FOB
100 Pieces (MOQ)
More
Application : Communication
Contact Supplier
Audited Supplier
Shenzhen KOC Communication Co., Ltd.

Manufacturer/Factory & Trading Company

Guangdong, China Since 2013
Chat Now Send Inquiry
View More

Related Searches

Fiber Optic Connector Fiber Optic Pigtail Fiber Optic Transceiver Plc Splitter Fiber Optic Splitter Fiber Jumper Outdoor Fiber Optic Cable Fiber Optic Distribution Box Fiber Optic Jumper Fiber Optical Splitter

You may also like

Fiber Optic Product Plastic Optical Fiber Optical Fiber Communication Optical Fiber Network Fiber Optic Communication Fiber Optic Network

Browse by Categories

Home > Electrical & Electronics > Telecommunication & Broadcasting > Fiber Optic Equipment > Single-Mode Fiber Optic Equipment
1/64
TOP

Search Filter

Categories

More Less
  • Fiber Optic Equipment
  • Fiber Connector
  • Optical Fiber
  • Cable Tools
  • Radio & TV Broadcasting
  • Metal Processing Machinery Parts
  • Satellite
  • Communication Module
  • Communication Cable
  • Junction Box

Certification

More Less
  • RoHS
  • ISO
  • CE
  • GS

Condition

More Less
  • New
  • Used

Type

More Less
  • Fiber Optic Splitter&Coupler
  • Optical Fiber Distribution Box
  • Fiber Transceiver
  • Fiber Optic Connectors
  • Fiber Optic Multiplexer

Wiring Devices

More Less
  • ODF
  • Integrated Wiring

Company Type

More Less
  • Manufacturer/Factory
  • Trading Company
  • Group Corporation
  • Individuals/SOHO
  • Other

Company Location

More Less
  • Zhejiang
  • Guangdong
  • Shandong
  • Jiangsu
  • Hubei
  • Henan
  • Hunan
  • Shanghai
  • Fujian
  • Anhui
  • Beijing
Reset Done