Ultra Nose Box, Product Type Ultra Nose Box, Connection Type Ring Terminal/Post, For Use With Single or Double Trailers, Color Gray, Material Nylon, Overall Length 3 1/8 in, Height 7 11/16 in, Overall Width 7 1/4 in, Standards J560B, Features 39-Pin Connections Eliminates Overcrowding of Wires, Front Cover, Hinged Door Keeps Elements Out While Providing Easy Access, Insert Molded Pins Helps Prevent Accidental Disconnects, Replaceable 7-Pin Insert for Easy Maintenance, Includes Split Pin