The 5/8-inch diameter of this hitch pin is compatible with any ball mount or other trailer hitch accessories with a 2-inch or 2-1/2-inch shank and 5/8-inch pin hole to fit virtually any class 3, 4 or 5 hitch The 105-degree bend in this trailer hitch pin creates a useful handle for easier use and allows the pin to stay securely engaged in the trailer hitch and ball mount This 5/8-inch Trailer hitch pins and clips are made of solid steel, protected with a durable galvanized finish for excellent rust and corrosion resistance, reliable strength construction, that can resist rain , dust, and other corrosion threats. Provides solid security You can easily insert the hook clip, just plug the ball seat or other hook accessories into the receiver. Line up the pin holes on the side of the receiver tube, insert the hitch pin and install the clip, the pin can be securely attached to the trailer tether and mounted to the ball. This high-strength trailer hitch pin is tested and rated for a capacity of up to 21,000 lbs. gross trailer weight. This makes it well-suited for a variety of heavy-duty towing applications