• Bosch 3 pc HSS Step Drill Set Model SDH30.

• SDH30 3 pc. high speed steel step drill set includes SDH1, SDH3 and SDH6.

• Self starting points start on contact.

• Balance double flute design eliminates chatter and vibration.

Bosch step drills offer the ability to drill up to thirteen holes with just one drill bit. Cuts are clean and accurate in even the toughest materials including sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron up to 1/8in thick. Ideal for electrical, plumbing and HVAC contractors with jobs like running conduit, drawbolt holes, electrical knockouts, faucet installations, auto body work, running freon lines, edge boring steel and hollow doors.