CARBIDE MULTI-WHEEL: Allows angle grinders to cut material they couldnt previously; wood, plastics, composites and more X-LOCK WHEEL CHANGE: Features snap-on mounting and a wheel-release lever on grinder for change-out up to five times faster CARBIDE-GRIT EDGE: Provides a long life because the grit is bonded to the steel wheel with laser-melting technology TOOL-FREE DISC SWAP: The wheel mounts properly without the need for a spanner wrench or flange nuts for no losable parts BACKWARD COMPATIBLE: Bosch x-lock carbide multi-wheels are backward compatible with standard 7/8 in. arbor mounts THIN WHEEL BODY: Provides fast cuts and professional performance EXPANSION SLOTS: Avoids warping