The Pro-Kit tow bar lock slots into a Hayman Reese style square hitch with a 5/8 inch or 16 mm pin hole, so you can tow the van or box trailer and know the tongue stays put when you pull up. The bent pin layout works with most square style slide hitches, locking straight through the towbar receiver and tongue to keep the towball and coupling tied to the vehicle when you duck into the servo or the shops. The metal body and pin run a plated finish that handles regular road grime, coastal spray and red dust from long drives between 0–50°C. The keyed barrel lock comes with two matching keys, which is handy if one disappears into the sand or mud after a few trips. It is simple gear, a smart buy for anyone towing on a standard Hayman Reese style setup who wants solid mechanical security.

• Tow bar hitch pin lock for towing security
• Suits Hayman Reese style square slide hitches
• Fits receivers with 5/8 inch (16 mm) pin hole
• Secures towball mount and coupling to vehicle
• Replaces standard hitch pin with keyed lock
• Metal pin and lock body with plated finish
• Includes two matching keys for convenience
• Suitable for caravans trailers and general towing use
• Simple mechanical design with no wiring or electrics
• Compact size for easy storage in glovebox or toolbox

Q: Will this tow bar lock fit my Hayman Reese style square receiver with a 5/8 inch pin hole?

Yes, this lock is made to suit Hayman Reese style square receivers that use a 5/8 inch (16 mm) pin hole. It slides through the aligned holes in the receiver and tongue. The locking barrel then secures the pin in place. If your hitch uses a smaller 1/2 inch pin this lock will not fit.

Q: Can I use this lock on other brands of square style hitches?

Yes, you can use it on other square style slide hitches as long as they use a 5/8 inch (16 mm) pin hole. The key requirement is the pin size and the square receiver layout. Many aftermarket and factory towbars follow this standard. Always check the pin diameter on your current hitch pin before ordering.

Q: Does the lock come with spare keys?

Yes, the lock is supplied with two matching keys. You can keep one key on your main vehicle key ring and store the spare in a safe place. Having a spare key is helpful on longer trips. It means you are not stuck if one key is misplaced at a campsite or worksite.

Q: Does this tow bar lock increase the tow rating of my vehicle?

No, this lock does not change the tow rating of your vehicle or hitch. The tow capacity always depends on the lowest rated component in your towing setup. The lock simply replaces the standard pin with a keyed version. You should always stay within the manufacturer rated tow and ball download limits.

• Suits Hayman Reese style square slide hitches
• Fits hitches with 5/8 inch (16 mm) pin hole
• Fits other square style slide hitches with matching pin size
• Used to secure towball and coupling to the vehicle towbar
• Installation requires compatible towbar with 5/8 inch pin hole