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 SPIRAL BEVEL GEARS: Provide smooth transmission of power to grinding applications TWO-POSITION SIDE HANDLE: Offers comfortable control UPDATED GEARHEAD MOUNTING COLLAR: Mounting collar on the gearhead now compatible with all bosch metal and concrete cutting guards