Diablo's Starlock oscillating sanding blades feature application specific designs that deliver maximum durability and longer life in grout, mortar and tile adhesive removal applications. The 40-Grit sanding plate removes material and routes joints on wall and floor tiles. A Carbide Grit Tip removes grout and mortar from hard to reach areas and tight corners. Tool free quick-change interface fits Fein and other Starlock tools; also compatible with most non-Starlock multi-tools.