The Bosch GWX10-45E 4-1/2 In. X-LOCK angle grinder features the X-LOCK mount, offering a wheel change interface that's up to five times faster than conventional interfaces. There's an audible snap when mounting an X-LOCK Wheel on an X-LOCK grinder. The wheel mounts properly without the need for a spanner wrench or flange nuts. The wheel is released from the grinder with the pull of a lever. The grinder features a narrow grip zone. The GWX10-45E ergonomic grinder features a narrow grip zone for extended comfort and control, combined with a powerful 10-amp motor. It delivers results, producing up to 11,000 no-load rpm for maximum productivity in grinding and cutting applications. The tool weighs 4.5 Lbs. Equipped with epoxy-coated field windings and direct-motor cooling, this grinder is built for a longer tool life. It features spiral bevel gears for smooth transmission of power. The lock-on/off slide switch provides improved user control during grinding and cutting applications. For added convenience, it has an auxiliary handle and an adjustable tool-free guard.