20 and BTH-1, Includes Eye Hooks with Hook Latches Fixed Spread Lifting Beam,1000 lb.Spread 24 in, Min. Spread 24 in, Headroom 13 5/16 in, Overall Length 24 in, Bail Thickness 3/4 in, Usable Upper Bail Length 5 in, Usable Upper Bail Width 3 in, Hook Opening 57/64 in, Standards ASME B30.