BOSCH 4-1/2" Paddle Switch Grinder Model 1810PS - Paddle switch with lock-on for better operator comfort and control. Directed air flow diverts dust away from switch and vital components. Vibration Control Handle Reduces vibration up to 60%, providing uncompromising comfort for extended periods of work. AC/DC capability Extends the versatility of the tool by working from DC outlets such as welders and generators. Sealed switch Keeps debris out of the switch mechanism and extends switch life. ServiceMinder(TM) brushes Eliminates guesswork, stops the tool when preventative maintenance is required. Epoxy Coated Field Windings Provides ultimate protection against abrasive dust and metal debris. 5/8" -11 Spindle Wide flexibility for mounting most popular accessories. Tool-free adjustable guard Quick guard installation and adjustments. Spindle lock For quick wheel changes. Directed Air Flow Unique design diverts dust away from switch and vital components. Includes: Guard, Vibration Control Auxiliary Handle, Flange Kit, Spanner Wrench, Abrasive Wheel.