Designed for use on horizontal machining centers, these hook-type clamping modules are used with corresponding clamping screws to provide safe and easy loading and unloading of heavy workpieces or fixture plates. The clamp modules enable you to suspend and support the workpiece or plate before clamping. Right side or left side tightening modules are available. For precise locating, use with CP157 series tapered bushings. The body is made from 4140 steel, induction hardened, precision ground, with a black oxide finish. The locking screw is made from 4135 steel, quenched and tempered with a black oxide finish.