The Bosch 12V Max Brushless 3" Angle Grinder, No. GWS12V-30N, features a compact design to make quick, difficult cuts in tight spaces. It produces 19,500 no-load rpm at 1.5 lbs. (not including battery). The grinder was engineered to fit the palm of a user’s hand, for ergonomics and control. Its spindle-lock design provides fast wheel change; simply pull the locking clip and unscrew the spindle screw. The grinder has restart protection to help prevent accidental start-up and overload protection to reduce the risk of the motor overloading or overheating. It also features fast braking time, stopping the wheel after the grinder is turned off.