12pcs 8mm Nitride Titanium Coated High Speed Steel HSS 4341 Twist Drill Bits 11.8x11.8x15.7inch -Key is removable in both

-Key is removable in both ON and OFF positions

Groove Depth: 11

Made from low attenuation RG58 Cables

Screw Middle Distance: A:6

12pcs 8mm Nitride Titanium Coated High Speed Steel HSS 4341 Twist Drill Bits 11.8x11.8x15.7inch -Key is removable in bothSpecifications: Cutting Edge Diameter: 8mm 0. 315" Round Shank Diameter: 8mm 0. 315" Cutting Edge Length: 78mm 3. 07" Overall Length: 116mm 4. 57" Split Point: 135 Degree Material: 4341 High Speed Steel (HSS) Finish: Nitride & Titanium Coated (TiN Coated) Package: 12pcs x Twist Drill Bits Descriptions: 4341 high speed steel contains high content of carbon and alloy elements, providing excellent cutting performance, high heat resistance, high hardness,