5 Piece HSS Black & Gold Quick Change Hex Shank Step Drill Bit Set (Sizes #1 to #5 - High Performance & Durable Cutting Tool | Drill America End Mills & Milling Cutters and durability when it matters

and durability when it matters most

Precise Weld Gaps: Provides exact weld gaps

making it an essential tool for professionals in the pipeline industry

Customer Reviews:

Crossbar Options: Flat (tack) or arched (no tack)

5 Piece HSS Black & Gold Quick Change Hex Shank Step Drill Bit Set (Sizes #1 to #5 - High Performance & Durable Cutting Tool | Drill America End Mills & Milling Cutters and durability when it mattersStep drills have single radial concave flutes to create a perfectly round hole in metal, plastic wood and other thin materials without center punching. Constructed of industrial grade high speed molybdenum steel, heat treated and temperature for long life. Self starting tip. No center punching needed. Automatically deburrs top side of hole. Ideal for steel, copper, aluminum and other thin materials. They are Black and gold surface treated with a 1 4"