Universal drill irwin cordless multi hm

Universal drill bit set (not for impact drill), for cordless drills. Faceted hard metal sip. The bit does not wander and drills faster. Drills in tile, brick, marble, floor tile, etc., but can easily handle other building materials, such as wood and plaster. Low speed drill with cooling function for long lifespan. PLEASE NOTE! Not for use with an impact drill.