Bosch Titanium Nitride Coated Step Drill Bit — 1/2in., Model# SDT8

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- Super-hard titanium-coating lasts up to six times longer than high-speed steel
- Self-starting point starts on contact
- Balanced double flute eliminates chatter and vibration
- Titanium-coating reduces heat for longer life
- Drills clean, accurate holes in these thin materials (up to 1/8 In.): sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron
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