Whether you are securing your trailer or locking down your hitch cover, a Tow Ready locking hitch pin always comes in handy. 5/8" & 1/2" Diameter Bent Pin receiver lock For 2" & 2-1/2" or 1-1/4" square receivers Includes Dust Cap Lock Housing Rotates 360 Degrees Class III 63224 can be used with square receivers & Fifth Wheel Base Rails