Bosch's X-LOCK Diamond Blades feature the X-LOCK mount and offer a blade change 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 blade is released from the grinder with the pull of a lever. This segmented rim diamond blade is designed for fast universal rough cuts in pavers, soft brick, and concrete/block. The blade provides an optimized mix of select quality diamonds,to deliver both fast cutting and longer life. Each blade features a steel core that delivers straight smooth cuts with less wobble. This stability helps result in longer blade life.