Drill Bit Twist Durable 25Pcs Straight Shank High Carbon Steel for Aluminum Alloy Die Stainless
- 130° drill point and double relief angle design. The cutting head is sharper, accurate grinding technology, sturdy and durable
- Reasonable 38° large vortex angle design, enlarged chip flute, smooth and flat, high temperature non‑stick tool
- Round shank chamfering design, clear steel stamp marking size, easy to identify the drill diameter when using
- Can be used to drill stainless steel, die steel, aluminum alloy, high carbon steel, cast iron, wood
- Adopt high-quality material, forged with M35 cobalt-containing steel, head quenched and heat treated, high hardness and good wear resistance
