Fully hardened high carbon steel bit. Precision ground tri-point bit for a clean cut and reduced splintering. Sizes: 10, 13, 16, 19, 25, 32 and 40mm. 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, 13, 16, 19, 25, 32 and 40mm. For drilling softwood, medium hardwood, particle board, plasterboard, plastics and fibreglass. For use with drills, drivers and hand braces.