The Bosch GWX18V-13PN 18V Spitfire X-LOCK 5 - 6 In. Angle Grinder with Paddle Switch delivers the ultimate combination of performance, control and power in a cordless grinder. It features the X-LOCK mount, offering a wheel change interface that's up to five times faster than conventional interfaces. Theres an audible snap when mounting an X-LOCK wheel on an X-LOCK grinder. The wheel mounts without the need for a spanner wrench or flange nuts. The wheel is released from the grinder with the pull of a lever. This tool is part of the PROFACTOR System, which pairs BITURBO Brushless Technology with a CORE 18V PROFACTOR battery. BITURBO Brushless Technology is a high-performance motor and drive-train system designed to deliver power comparable to high-demand corded tools. The grinder includes other advanced electronics such as X-Brake, restart protection and KickBack Control. It features a multi-grip paddle switch, which provides increased grip options for better comfort and control. It also has spiral bevel gears, a narrow grip size and a two-position Vibration Control side handle. The adjustable tool-free guard is designed with multiple fixed-adjustment settings to allow the user to position the guard in a variety of working angles.