The Bosch line of step drills offers 13 different hole sizes with a single bit. The step drill bits are ideal for electrical, plumbing and HVAC contractors. Typical step drill bit applications include electrical knockouts, running conduit, drawbolt holes, faucet installations, auto body work, running freon lines, edge boring steel and hollow doors.
From the Manufacturer
The Bosch line of step drills offers contractors the ability to drill up to 13 different sized holes with just one bit. They are designed for electrical, plumbing and HVAC contractors. Materials: Bosch Bits drill clean, accurate holes in these thin materials (up to 1/8"): Sheet Metal, Ducts, Steel, Copper, Brass, Aluminum, Plastic, Plexiglas, Wood, Veneers, Vinyl Siding, Plasterboard, PVC, Stainless Steel, and Cast Iron. Applications: The Bosch line of step drill bits are ideal for: Electrical Knockouts, Running Conduit, Drawbolt Holes, Faucet Installations, Auto Body Work, Running Freon Lines, Edge Boring Steel and Hollow Doors.