Designed with a single-flute cutting edge for great control, the UNIBIT #21 13/16 in.1-3/8 in. Step-Drill Bit makes true round holes every time. It can power through a variety of surfaces, including: stainless steel, copper, brass, aluminum, plastic, and laminates. The 3-flatted shank prevents bit from slipping in drill chuck.
Features:
- 3 faltted shank prevents slipping in drill chuck
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
- Patented single-flute cutting edge gives the user a true round hole every time
- Pilot hole required
