5 SEGMENTS - five diamond encrusted segments for increased longevity and productivity GRIT SIZE - #30/40 grit MEDIUM BOND - ideal for grinding medium-soft to medium concrete 1 PIECE - includes 1 grinding disc USE WET OR DRY - recommended to use with SASE Quick Change System floor grinding machines such as Sase PDG 5000/5000P/6000/8000/8000P/9500/R8/SHG 270 Trapezoidal diamond grinding tooling designed for SASE Quick Change System floor grinding machines. 5 diamond segments per disc, set includes 1 piece total. Medium bond is ideal for grinding medium-soft to medium concrete. #30/40 grit, use wet or dry with SASE floor grinding machines such as Sase PDG 5000/5000P/6000/8000/8000P/9500/R8/SHG 270.