Metabo 613070520 18V 5.2 Ah Cordless Lithium-Ion 5 in. Non-Locking Flat Head Grinder Kit Extremely flat gear head permits working at acute angles down to 43 degrees. Compact design quickly removes welding slag, rust or paint in tight places Slim handle construction will minimize fatigue even when working on out-of-normal position Robust motor delivers long service life with overload protection that prevents overheating Metabo Quick System for changing discs by means of a quick-locking nut