Prime Products Hitch Lock 5/8" 5/8in. Two sizes are available to fit most hitches. Our 5/8" diameter pin is used on 2" receivers while the 1/2" diameter pin is used on 1-1/4" receivers. Locking hitch pin is made of chrome-plated steel and comes with protective cover and two keys. Features of Prime Products Hitch Lock 5/8" Provides security for your trailer boat or other towing equipment 5/8" diameter pin is used on 2" receivers Chrome-plated steel construction Includes protective cover and two keys Package Contents: Prime Products Hitch Lock 5/8" Prime Products 18-2058: Hitch Lock 5/8" 5/8in