#4 HSS Black & Gold Step Drill Bit (3/16" - 7/8" by 1/16") BoltsandNuts.com Part Number DMS04-1048

Part Number DMS04-1048

Part Number GLBCOX1213/64

Height: 21-7/16"

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#4 HSS Black & Gold Step Drill Bit (3/16" - 7/8" by 1/16") BoltsandNuts.com Part Number DMS04-1048Product 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