Designed for cordless low RPM multi-purpose drilling.\nIRWIN Cordless drill bits are ideal for drilling the most common materials, including: brickwork, breeze block, wood, dry wall, slate, plastics, sheet metal.\nFor rotary drilling only - no hammer/percussion.\nThe perfect drill bit for drilling ceramic tiles - doesn't walk or fail even in hardened floor tiles.\nUnique four-facet ground carbide tip for lower drilling pressure and perfect centring.