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