Unibit Metric Self-Starting Step Drills
HSS - Multiple Hole Sizes
Features:
- UNIBIT Step Drills have an exclusive single radial concave flute. Allows the drilling of perfectly round holes in thin materials quickly and with less effort.
- Each bit is constructed of industrial grade high speed molybdenum steel, and is heat treated to a hardness of between 61 - 63 RC. This assures maximum strength and long life.
- Use for steel, copper, brass, aluminum and other thin materials
- Also ideal for drilling through wood, composition board, and even plexiglass and plastics which often crack with standard twist drills.
- Handle thicker materials by drilling from both sides of work surface
- Use for reaming, deburring and cutting through soft wood or plasterboard

For more info, visit www.p65warnings.ca.gov.
Item Number | Description | No. of Hole Size | Shank Dia | Size Range Min | Size Range Max | Step Thickness | Price | Quantity |
---|---|---|---|---|---|---|---|---|
81-785-8 | Metric Self-Starting Step Drill | 9 | 6.5 mm | 4 mm | 12 mm | 5 mm | $ 30.52 | |
81-788-2 | Metric Self-Starting Step Drill | 5 | 6.5 mm | 4 mm | 12 mm | 11 mm | $ 30.52 | |
81-787-4 | Metric Self-Starting Step Drill | 7 | 10 mm | 6 mm | 18 mm | 5 mm | $ 58.97 | |
81-786-6 | Metric Self-Starting Step Drill | 10 | 10 mm | 4 mm | 22 mm | 5 mm | $ 66.30 |