Bosch 2-3/4" Starlock Hybrid Grout & Tile Blade combines the functionality of a grout blade and a delta rasp into a single unit. The 1/8" kerf grout blade allows for precise removal of grout, while the delta rasp is ideal for grinding into the thinnest of materials. The teardrop shape of the blade makes it easy to work in corners, and the superior brazed carbide fully covers the blade for longest usable life. This blade is compatible with Starlock oscillating tools.