These side clamps feature a screw type clamping mechanism that forces the jaw forward, providing a long clamping stroke and firm clamping. The jaw also creates a downward force which prevents lifting of the part. The precision ground jaw allows for clamping on finished surfaces. Mounts from the top with two mounting holes. An open-end wrench or hex wrench can be used for clamping. Body and jaw are made from 1045 steel with a black oxide finish. Jaw is precision ground. Shaft is made from 4140 steel.