These supports help reduce chatter and workpiece deflection while using very little space on a fixture. The spring-loaded cylinder is compressed by the workpiece and locked in place using the cam lever. The body is made from 1045 steel with a black oxide finish. The piston is made from 4140 steel, hardened to HRC50-55, with a black oxide finish. The cam handle is made from die cast zinc with a plated chrome finish.