Duke Pro Series 850-FJ steps up the game for beaver trapping. Built on the design success of the Pro Series 550-OS & 650-OS, the 850-FJ. Featuring 8.5” outside jaw spread, smooth cast steel jaws, night-latched stainless steel dog with step-down PIT Pan System, double bolted base, four-coiled and machine link wolf chain with welded Wolf swivels. Ideal for BIG BEAVER applications.