Excellent item from Bolt Lock.

These receiver locks from BOLT feature a solid zinc core, an automotive-grade cylinder with a patented 6-plate tumbler sidebar to prevent picking and bumping, and a stainless steel lock shutter to help keep out dirt and moisture. They're also equipped with a rugged jacket and cap. BOLT receiver locks are ideal for helping you secure your hitches by conveniently using your ignition key. That means you won't have any extra keys to carry or lose and that you'll have the convenience of always having the right key.

Easy to use,!

Just slide the key in that you want to use with the lock and turn it until it clicks and you've just keyed the lock. Instead of needing to carry around several keys with your truck, all you need now is your trucks ignition key.

Bolt also makes other lock items such as pad locks, tool box locks and cable locks. So forget about having to look for and carry around all those keys, just grab your vehicle key and go.

Receiver/Coupler Lock, 0.625 in. Hitch, Hole, Uses Chrysler Ignition Key