Titanium drill bits last 6 x longer than high speed steel bits. The durability comes from super hard titanium nitride coating. This coating protects the bits from chipping and cracking and the lubricity protects from heat build-up which is the number one cause of product failure. Its balanced double flute eliminates chatter and vibration. The speed helix design penetrates 3 x faster than standard bits for easier drilling, reduced heat, extended drill bit life and extended battery life. 135° split point starts on contact with no walking or skating. Self-starting point starts on contact. This tool drills clean, accurate holes in these thin materials (up to 1/8''): sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron.