Description of Bosch TI2159 Titanium Coated Drill Bit
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 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.