These compact and economical clamps enable you to fixture more parts on the machine table. The steel wedge spreads the clamping force uniformly on both sides of the aluminum channel. The extra material on the clamping jaws can be machined to conform to the shape of the workpiece, allowing you to fixture unusual applications. These clamps allow you to hold two parts with equilateral clamping action. They work on both flat and round stock. The locking plate allows you to expand the clamp for machining. When the clamp is used to hold flat stock, use the locking plate to machine the faces parallel. Mounting screws are included. The channel is made from 7075-T6 aluminum. The wedge is made from steel.