OUT SIDE JAW SPREAD 5 1/2" AND INSIDE JAW SPREAD OF 4 3/4". THE CAST JAW FACE IS 3/8" THICK AND THE OFFSET IS 3/16". SMALL ENOUGH FOR FOX AND TOUGH ENOUGH FOR THE NASTIEST COYOTE. NOTE: PAN TENSION ON 2 COILED TRAPS RUN ABOUT 2.5 POUNDS WHICH IS GOOD FOR A MULTI SPECIES TRAP. 4COIL RUNS ABOUT 4 POUNDS.