Diamond Blades Type, CR 19, SP12, SS21, LC 69, TW 22 ... LM 15, ST 65 & LG 91CR19- (Sintered, Closed Edge) Blades for Ceramic, slate, Limestone and stoneSP12-(Sintered, segment Edge protected ... Concrete, brick, ceramic and slate.LA96- (Laser Segment Edge) Asphalt, Contrite, Slabs and concrete pavingT56-(Sintered, closed edge) Bricks, ... - ( Laser, Segment Edge) hard Stone and Granite. Diamond Blades