Concentric slave cylinders are fitted within the bell housing where the hydraulic cylinder encloses the input shaft. They are easy to fit and automatically adjust the travel of the diaphragm spring during clutch wear.

The Borry CMC's, very robust in design but also light weighted due to the manufacturing out of special plastic material, are available for many applications. Though the very compact design in order to fit for the decreasing packages of the vehicles, the cylinders have high reliability and efficiency.

Used in the lever-operated transmissions, the housings are always made of plastic and the cylinders are protected against contamination using rubber bellows. Compared to traditional cast iron cylinders, plastic cylinder with corrosion-resistant, durable, light weight, and other advantages, fit for the decreasing packages of the vehicles.