The QEP Grind Shield is the perfect solution for mitering tile while using an angle grinder. This cone-shaped grinder nut is a non-marking, impact-resistant plastic grinder nut for tile designed to eliminate chipping and metal burns. The cone shape is specially engineered to deflect off the tile during mitering. The Grind Shield is significantly safer than traditional steel nuts and assists in creating a smooth flawless edge. The slim design fits tight corners and comes in a convenient 3 pack.