DOUBLE SEGMENTS - diamond encrusted W shaped segments for increased airflow, longevity and higher productivity MEDIUM BOND - suitable for grinding medium-soft to medium concrete GRIT SIZE & SET - #30/40 grit size includes 3 grinding discs USE WET OR DRY - walkbehind grinder recommended COMPATIBLE - designed for Scanmaskin floor grinding machines Diamond grinding tooling designed for Scanmaskin floor grinding machines. Medium bond is ideal for medium to medium soft concrete. Comes in a set of 3 pieces, 40mm x 12mm x 12mm segment dimensions with #30/40 grit. Use wet or dry.