3 Piece HSS Black & Gold Quick Change Hex Shank Step Drill Bit Set (Sizes #1 to #3) Quantity:1 Part Number: BIT-D/ACO3/8X39/64

Part Number: BIT-D/ACO3/8X39/64

Part Number: EZ-SK21515

brass and bronze

Part Number: DUR557-95

Part Number: Assortment Kit #167371 Pieces - Coarse Thread

3 Piece HSS Black & Gold Quick Change Hex Shank Step Drill Bit Set (Sizes #1 to #3) Quantity:1 Part Number: BIT-D/ACO3/8X39/64Product 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