Genuine Bosch replacement part. Diamond blades with the X-LOCK mount design – offer a faster, fixed mount and high-quality materials. X-LOCK wheel change – features snap-on mounting and a wheel-release lever on grinder for change-out 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. Segmented rim diamond blade – designed for fast universal rough cuts in pavers, soft brick, and concrete/block.