Angle Grinder with X-Lock, 5", 120 V, 13 A, 12000 RPMX Lock mechanism enables installation and removal of discs without a wrench and prevents over or under tightening of abrasive wheels New toolless wheel cover allows fast and easy installation and adjustment Electronic current limiter prevents motor burnout due to overloading Soft start feature gradually increases speed to eliminate start up shock Constant speed control maintains constant speed under heavy load Labyrinth construction features a complex