The Carlisle Brake & Friction Concentric Slave Cylinders with Integrated Mechanical Park Brake provide a high performing service and park brake actuation functions in a single cost effective unit. Its compact form factor fits directly to the axle housing eliminating external linkages and Its fully enclosed housing provides superior environmental protection and eliminates wear points associated with traditional service and parking brake linkages. The integrated park lever features a highly efficiency cam mechanism while the removable cap has been designed to simply on vehicle service and adjustment.