Compact design for low profile positive clamping. These clamps permit faster loading and unloading of workpiece. To install, lock the flange collar into the cam using the locking screw and then tighten up the cam with a wrench. The cam and locking screw are made from SAE-4135 alloy steel. The flanged collar is made from SAE-1095 alloy steel. Parts are heat treated with black oxide finish.