Fits all common hitch receivers to prevent the theft of your towing hitch. It will keep your vehicle and trailer connected safely and securely. This NEW ARRIVAL MODEL 2 Hitch Pin Locks with 3 Keys Aliked will attach your hitch mount to your receiver securely and reliably. 3 Keys can open your both 2 hitch pin locks. This hitch lock is meant to fit in all standard Class III , IV , V hitch receivers. Covered key slot design to prevent dust and corrosion in the lock mechanism well. It has a dust and weather-proof cover and a convenient straight design for easier access. Fits all common hitch receivers to prevent the theft of your towing hitch. It will keep your vehicle and trailer connected safely and securely. Secure your bike rack, cargo carrier, hitch cover and more to your trailer hitch. Hard chrome plated to increase surface hardness which prevents wear and stops rust. Just pop the deadbolt onto the end of the pin and the lock will automatically engage. 16mm (5/8") diameter hitch pin, which is the Safety Standards requirement.