Solid trailer hitch locks is designed for easy operation. With the push-to-lock design, you can easily push to lock it without using key. Just turn the key a little bit and the hitch lock will pop out by itself. The hitch pin lock feature high quality solid steel with black electrophoretic paint, which is quite sturdy and can carry up to 30,000 lbs, twice as much as that of common pin locks. The core of the hitch pin lock is made of premium zinc alloy tubular, durable and reliable. Solid locking hitch pin with anti-theft design can resist different types of external forces.