Unibit® Hex Shank HSS #21 Hole Enlarging Step Drill Bit, 13/16 - 1 3/8 in: It is made of tough steel for maximum life.
Unibit® Hex shank HSS #21 hole enlarging step drill bit with 13/16 - 1 3/8" Dia includes 1 number of flutes and 3 flatted hexagonal shank. Bit with 7/16" shank is ideal for drilling holes into thin materials.
Bit diameter: 13/16 - 1 3/8 in
Shank type: 3 flatted hexagonal
Shank diameter: 7/16 in
Number of flutes: 1
Single-flute cutting edge for greater control through steps
3 flatted shanks prevents slipping in drill chuck
Patented single-flute cutting edge gives the user a true round hole every time
Also available with titanium nitride coating for longer life
Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
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