Irwin® Unibit® 10239 Fractional Self-Starting Step Drill, NO 9, 7/8 in, 1-1/8 in, 2 Steps, 2 Hole, M35 Cobalt HSS
Irwin® Unibit® Step Drill, Fractional, Self-Starting, NO 9, 7/8 in Minimum Hole Dia, 1-1/8 in Maximum Hole Dia, 2 Steps, 1/8 in Step Depth, 2 Hole Sizes, 1 Flutes, 7/16 in Shank, Hex Shank, SpeedPoint Point, M35 HS-Co Cutting Edge, M35 Cobalt HSS, Bright, Applicable Materials: Stainless Steel, Copper, Brass, Aluminum, Plastic and Laminates
- Single flute cutting edge for greater control through steps
- Hex shank prevents slipping in drill chuck
- New SpeedPoint tip penetrates faster than previous Unibits and prevents walking
- General purpose
- Cobalt is harder than high speed steel and provides better wear resistance, commonly used on high tensile alloys
- Bright provides a smooth, polished finish on the tool, increases chip flow in softer materials such as aluminum, wood and plastic
- For 1/2 in and 3/4 K