Trapezoidal diamond grinding tooling designed for Lavina, Edco Magnatrap and Onfloor grinding machines. Medium bond is suitable for grinding medium-soft to medium concrete. Number of grinding segments determines the pressure applied on each diamond segment, thus the aggressiveness of grinding. A lower number of segments corresponds to a more aggressive grind. Comes in a set of 3 pieces with #30/40 grit. Use wet or dry with Lavina L7/ L13/ L20/ L21/ L25/ L30/ L32/ L38 grinding machines and X-Series of equivalent models, EDCO Magnatrap grinding machines or Onfloor grinding machines.