The Makita DPV300Z is a powerful cordless sander/polisher It has variable, mechanical 2-speed and constant speed control. The DPV300Z features a brushless motor with a trigger lock and lock-on switch which lessens user fatigue. It includes an ergonomic soft grip, and an anti-restart function for user safety. The pad/disc is 50mm in diameter, with a polishing no-load speed of 0-2,800rpm and a sanding no-load speed of 0-9,500rpm. Features: Variable speed control Mechanical 2-speed control Constant speed control Brushless motor Trigger lock Lock-on switch to reduce user fatigue Anti-restart function Ergonomic soft grip Comes with: Side handle Pad Adaptor Wool pad Sponge pad Specification: Voltage: 18 v Noise sound pressure: 73 dB(A) Noise K factor: 3 dB(A) Pad/Disc Diameter (Hook & Loop type): 80 mm Pad/Disc Diameter (Twist on/off type): 50 mm Backing Pad Diameter (Hook & Loop type): 75 mm Backing Pad Diameter (Twist on/off type): 46 mm No Load Speed (Sanding): 0 - 9500 rpm No Load Speed