Aluminum Cobalt Step Drill Bit Straight Shank 

Aluminum Cobalt Step Drill Bit Straight Shank This step drill bit contains cobalt and adopts a unique step structure, which can open various sizes and specifications of apertures. Compared with ordinary twist drill bits, this spiral step drill bit has less shaking and does not need a center punch. The reamer straight drill bits adopt a straight shank design and can drill holes on thin iron plates, steel plates, aluminum plates, copper plates, plastic plates, and hardwood boards. Product Features This groove drill bit is suitable for various sizes and specifications of apertures, and having this ladder drill is equivalent to having a box of drill bits. This ladder drill bit comes with its own curvature for each step, making it easy to open and expand holes. This step drill bit adopts a straight handle, which can be tightly held during drilling and is more secure. Specifications: Product Name…

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