Features and Benefits: * Gripping Surface: 3" (76 mm) * Overall Length: 7" (178 mm) * Weight: 3.4 lbs (1.54 kg) * Capacity: 5 tons (4,536 kg) This is a new generation of Mo-Clamps, self-tightening. Made of heat- treated alloy steel. It works by grabbing onto the flanges, this provides a sure grip while pulling "in-line". Finger grips are cast into the tool to provide easy handling while positioning the clamp. Its easy to use and handy to have!