Designed for holding insulated cables and wire. The sample is secured by the cam, which self-tightens as a load is applied and spreads the load evenly.
Serrated cams are preferred for materials which may be slippy and so need a 'bite' into the outer surface to grip securely.
Fitted with a clearance hole and supplied with a 10-32 UNF cap-head screw for fixing to the base of a test stand.