【UNIVERSAL COMPATIBILITY】- 5/8" diameter and 2-3/4” long trailer hitch locks fits most class III IV 2” hitch receivers. The hitch lock also can be used for tray tow rope of trailer, truck, car, bike and boat. | 【PUSH-TO-LOCK DESIGN】- Solid hitch lock 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 locking hitch pin will pop out by itself. | 【DURABLE ANTI-THEFT HITCH LOCK】- The hitch 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. | 【PACKAGE INCLUDES】- It’s a newly upgraded hitch lock with all metal construction. This trailer hitch lock comes with 4 x keys, 8 x Rubber O-Rings, 2 x 5/8" lock pin and 2 x Upgrade button lock head. | 【PREVENT RATTLING NOISE】 - When you are using a trailer hitch, you might run into some issues like rattling and noise. Our trailer hitch lock is equipped with 8 rubber O-rings, which can effectively prevent rattling noise caused by shaking during towing.