This # 5 Coil-spring trap comes standard with extra riveted 3/16" base-plate, center swiveled with D-ring, heavy jaws 1/4" thickness and 71/ 2" jaw spread. 12" straight link chain (5.m.m.) With drowner lock on the end. It has a two posted pan for stability and pan tension. Dog has night latch on it. This trap comes standard four-coiled. Regular jaws only. Excellent for beaver, wolf, bobcat, otter, and mountain lion.