Tightening the hex screw expands the jaws outward and downward, preventing workpiece lift. Clamp two workpieces against fixed stops. The low profile and small size allow for faster set up and more parts per load. CP132-A uses a countersunk head screw. CP132-B uses a socket head cap screw. The jaws are made from SNCM439 steel, HRC33-39, with a black oxide finish. The washer is made from 4135 steel with a black oxide finish. The O-ring is made from fluoro rubber.