Quick Details Place of Origin: China Brand Name: JG / OEM Model Number: 170 HSS Drill Bits Set Type: Twist Drill Bit Use: Metal Drilling Product Name: 170 PCS HSS Drill Bits Set Size: 1-10mm*0.5mm Material: HSS Process: Edge Ground, Polished Standard: DIN338 Point Angle: 118 Degree Point Shank Type: Straight Shank Helix Angle: Type N Regular Spiral Right Hand Surface Finish: Titanium Coating Application: For Metal Aluminium Stainless Steel Drilling