#1 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/8"- 1/2 by 1/32") BoltsandNuts.com Length 2-7/8"

Length 2-7/8"

Part Number KFD3F1-23/64

Part Number: assortment-kit-5141511 Pieces - Coarse Thread

Used in the production of cast iron

#1 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/8"- 1/2 by 1/32") BoltsandNuts.com Length 2-7/8"Product Description Step 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