ITEM NAME:Step Drilling Titanium Coated Cone Bit Holes Cutter Power Tool HSS 4-42mm.ï ¼Ë†2ï ¼â€°Ã£â‚¬ Design】: The step bits makes a very good impression visually. And the stepped grooves to prevent slippage in the chuck. It is very convenient to use for drilling holes in a variety of materials such as steel, brass, wood, plastic etc.It can deburr, chamfer and open hole, but ordinary twist drill can't.
