Product Description: Pandadrill is one the professional manufacturer and supplier of high performance rock drilling tools like DTH Hammers and Bits. PC Hammers and Bits, DTH drilling pipes and Top Hammer Drilling Tools. Our tools are widelyused in different drilling applications including mining,quarrying, water well drilling, geotechnical industries and etc. In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length. Competitive Advantage: • High grade tungsten carbide inserts • Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment Specification: HAMMER INCH BIT DIA(MM) BIT DIA(INCH) SHANK 1 64MM-76MM 2 1/2"-3" BR1 2 76MM-90MM 3"-3 1/2" BR2/PAD320 3 85MM-105MM 3 2/5"-4" BR3/DHD330/COP32/PAD330 3.5 85MM-110MM 3 2/5"-4 1/3" DHD3.5/IR3.5/COP34/QL30/PAD3.5 4 105MM-140MM 4"-5 1/2" DHD340/COP44/QL40/SD4/MISSION40/PAD340 5 127MM-200MM 5"-8" DHD350/COP54/QL50/SD5/MISSION50/PAD350 6 152MM-254MM 6"-10" DHD360/COP64/QL60/SD6/MISSION60/PAD360 8 195MM-350MM 7.2/3"-13 4/5" DHD380/COP84/QL80/SD8/MISSION80/PAD380 10 254MM-380MM 10"-15" SD10/NUMA100/DHD1100/PAD1100 12 305MM-457MM 12"-18" SD12/NUMA120/DHD1120/PAD1120 Different Shanks: Different Faces Shapes: Different Buttons Shapes: FAQ: Q1: Can I have a sample for testing? A:Samples are still to be paid but discounted price can be provided. Q2: Do you have the inspection procedures? A:100% strict inspection and testing for every order before packing. Q3: How can i get the after sale services? A:Free replacement will provide once the problems casued by our product quality. Q4: Can I have a visit to your factory before the order? A: Sure, welcome, here is our address: Yantai, Shandong. CONTACT: