1-21/64" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series BoltsandNuts.com Flute Length: 4-3/16"

Flute Length: 4-3/16"

Part Number: 75C625WA2G

All of the bits are finished with a zinc-phosphate coating that resists corrosion

Two Head Styles – The double box ends are the same size and both are 12-point

The head is made of AISI 4140 steel and heated to be stronger and more ductile than the handle

1-21/64" HSS Black & Gold Drill Bit with Reduced 1/2" 3-Flat Shank, Contractor Series BoltsandNuts.com Flute Length: 4-3/16"Product Description Contractor grade drill bit manufactured from M1 High Speed Steel and for use in a wide range of materials in the iron and steel families such aluminum, iron, steel and other metal drilling. Contractor Drill Bits have a 135 degree split point tip for self centering and reducing thrust. Compared to a conventional 118 degree tip, these drills wont go "walking" on you. They are black and gold surface treated. Reduced Shank Drills