The QEP Grout Saw Replacement Blades are designed to remove grout from joints of various sizes. A single blade clears approximately 1/16 in. wide grout joints. Use more than 1 blade at a time for wider grout lines. This premier grout removal blade also minimizes the amount of dust released into the room. Use this blade on floors, walls, countertops, or anywhere there is tile or stone grout. These blades may also be used as a repair tool for making a relief cut to chisel out cracked or broken tile.