The MB-450-FH is a #1 1/2 size trap but built to hold the meanest, nastiest coyote. Outside jaw spread is 5" and inside jaw spread 4 3/8". The 450 has 5/16 thick, smooth closed cast jaws. Features include a Paws-I-Trip Pan with night latched dog heavy levers, strong music wire springs, #2 chain, crunch proof swivels, and a 2 piece gusseted frame for strength and reliability.