Yamawa Weak Twist Groove A-Type 90° Center Hole Drill CD-Q 1X90°X4 CD-Q-1X4 1 Piece

Catalog number: CD-Q-1X4 Features: ●This is a weak-twist groove A-type center hole drill that is suitable for relatively hard materials because the groove has a weak twist. Applications: ●Cutting materials: carbon steel, alloy steel, tool steel, cast iron, copper alloy, aluminum alloy. ●Center hole processing. Specifications: ●Taper diameter (mm): 1 ●Shank diameter (mm): 4 ●Total length (mm): 35 ●Center hole angle (°): 90 ●Blade length (mm): 1 ●Blade shape: double-edged Material/Finish: ●High-speed tool steel (HSS)