Edge Series, 1/4", Heavy Duty Angle Die Grinder, 20,000 RPM, 1/4" Collet & Rear Exhaust, Ideal For Weld Grinding, Delivers Superior Control When Trying To Get Into Hard To Reach Places, Deburring, Surface Prep & Polishing, Lightweight, Durable Composite Body, 1/3 HP Motor, Ball Bearing Construction, Contoured Ergonomic Grip.