The Bridger #1.75 Coilspring Square Jaw comes stock with a night latch dog and double posted pan, heavy swivels, quality straight link machine chain, music wire springs, and an added baseplate with D-Ring. We settled on a size of 4 3/4" inside jaw spread and 5 1/8" outside jaw spread to keep it legal in virtually every state. Some trappers will want to outside laminate this trap with 3/16" rod and with these dimensions it will come in just under the magic 5 1/2" outside jaw spread that some states require. The measurements of this trap are nearly identical to the MB-550. In field testing in several states this trap proved itself on fox, coyotes, bobcats, and raccoon. This is a tremendous trap for the mixed specie trapper.