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 ... ) For concrete, bricks, Slate, sand lime stone,sandstone, marble, granite, ... LG91- ( Laser, Segment Edge) hard Stone and Granite. Diamond Blades