Heavy duty steel body with diamond dust cutting segments. For dry cutting of accurate holes in masonry. For use with drills equipped with a safety clutch. Do not use with hammer action. Includes 6 core drills (38, 52, 65, 107, 117 and 127mm), 2 cutting discs, 2 arbors (SDS Plus and hex), guide drill bit and drift key. Heavy duty steel body with diamond dust cutting segments. For dry cutting of accurate holes in masonry. For use with drills equipped with a safety clutch. Do not use with hammer action. Includes 6 core drills (38, 52, 65, 107, 117 and 127mm), 2 cutting discs, 2 arbors (SDS Plus and hex), guide drill bit and drift key.