BOSCH GWX18V-8N 18V X-LOCK Brushless 4-1/2 Inch Angle Grinder with Slide Switch, Tool-free Disc Swap (Bare Tool) Brand Bosch Material Metal Product Dimensions 11.8"L x 4.3"W x 5.1"H Power Source Battery Powered Color Blue About this item ERGONOMIC, ROBUST GRINDER DESIGN: Engineered with a narrow grip zone for best user comfort and considerable power X-LOCK WHEEL CHANGE: Features click-in mounting and grinder lever wheel release for change-out that's up to five times faster TOOL-FREE DISC SWAP: The wheel mounts properly without the need for a spanner wrench or flange nuts for no losable parts BRUSHLESS MOTOR: Provides equivalent 8.0 amps of power and greater efficiency that maximizes runtime and productivity RESTART PROTECTION: Helps prevent accidental tool startup when switching batteries SOFT-START TECHNOLOGY: Reduces startup torque to ease into cuts OVERLOAD PROTECTION: Reduces the risk of the motor overloading or overheating