Oscillating Scraper Blade, Blade Type Grout Removal, Oscillating Tool Accessory Type Grout Removal Blade, Blade Shape Round, Blade Width 2 1/2 in, Blade Length 3 1/2 in, Overall Length 3 1/2 in, Maximum Oscillations per Minute 21,000, Connection Style Starlock Max, Direct Fit For Tool Brand Bosch (w/ Starlock Max Mounts), Fein 700 series, Festool (w/ Starlock Max Mounts), Makita (w/ Starlock Max Mounts), Compatible with Adapter Starlock Max, Primary Material Application Grout