7"/9" Large Angle Sander - 15 amps; 6,000 RPM; 3 HP (Max Motor); Vibration Control Side and Main Handles which reduces vibration up to 60% providing uncompromising user comfort for extended periods of work; Lock On/Off Switch; AC/DC Capability which extends the versatility of the tool by working from DC outlets such as welders and generators; Service Minder Brushes which eliminate guesswork and stop the tool when preventative maintenance is needed; Epoxy Coated Field Windings which provide ultimate protection against abrasive dust and metal debris; Metal Gear Cover for maximum durability; 5/8" Spindle which accepts most popular accessories; Spindle Lock for quick and easy wheel changes; Includes 3-Position Vibration Control Auxiliary Handle