The DOYLE™ Hitch Vise is designed to fit any standard 2 in. hitch receiver. The dual jaws grip flat stock up to 5-3/4 in. thick or round stock from 1/2 in. to 3-1/2 in. diameter. The hitch vise comes equipped with a 2-1/2 in. x 5-3/4 in. anvil surface for metal fabrication.