#5 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/4" - 1-3/8" by 1/8") BoltsandNuts.com Part Number DWTH1-1428

Part Number DWTH1-1428

Part Number DWRRZ

Part Number DIC13262

Part Number: 62C1000BCGSS/316

#5 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/4" - 1-3/8" by 1/8") BoltsandNuts.com Part Number DWTH1-1428Product 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