Fully hardened high carbon steel bit. Precision ground tri-point bit for a clean cut and reduced splintering. Sizes: 6, 10, 13, 16, 20, 22, 25 and 32mm bits and 300mm extension bar and hex key. For drilling softwood, medium hardwood, particle board, plasterboard, plastics and fibreglass. For use with drills, drivers and hand braces.