You can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.
Widely Used: Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls, etc.
Material: HSS (Suitable for use in the hardness below 25 degrees workpiece, such as iron plate, copper plate, aluminum plate, the thickness of the plate of step is 3mm and wood, PVC sheet, insulation boards with a thickness of 5mm(0.2 inches) or less). It cannot be used to hard and brittle materials such as stainless steel, glass, tile floors, walls, etc.
Easy Drilling: Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake
High speed: titanium nitride coated steel Replaces 28 separate drill bits Two fluted design for fast, smooth cutting.
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