

The block is a two-in-one bleed and service block, allowing the caliper pistons to be exposed for cleaning.
This is a block similar to the bleed block, but with one side stepped, so that when you "pump" the brake lever, the piston is allowed out but is stopped before it exits the caliper.
Unlike the yellow Shimano blocks, the CMH bleed blocks are inserted from the top, they are easier to install and do not risk falling during bleeding.
Compatible with Magura 2 pistons calipers