Adapter sleeve converts diameter from 1/2" to 5/8"
No one will steal your hitch or hitch plug when it’s secured by this key-operated deadbolt lock. It’s built of chrome-plated, machine-hardened steel. A watertight dust cap covers the key slot to seal out water, dirt and road debris. The included adapter sleeve converts the lock from 1/2" to 5/8” diameter.
The hitch lock is solid and would work well as a 1/2" pin lock, but the manufacturer decided to ship a cheap sleeve and claim it will work on 5/8" also. I installed it on my boat hitch and the sleeve barely made it through the receiver. When you move it around the sleeve slides into the receiver and you only have contact on one side. They could have done it right and made 2 different size pins with the same lock, but they decided to cut corners. I will not pull my boat with this hitch lock in place.
Just purchased one of these locks, and in your hands, this lock feels solid. The locking mechanism and construction is top quality. Smooth key action and a protector cover make this a outstanding purchase. Curt builds great hitches...Curt builds great hitch locks too. I am a happy buyer of this fine product.