Toolman Tim

Thanks for the suggestion. I noticed the tough-system handcart has a concealed locking system that engages with a metal latch on the rear of each toolbox. This makes it impossible to release the boxes from the handcart without a padlock key. Unfortunately this system is built into the cart and not available with either the van or wall racks. I might try to secure a 1cm diameter steel rod vertically behind the wall rack and inside the rear metal latch on each toolbox.

I'm really looking for theft prevention on a wall rack in the workshop, rather than holding the boxes in place whilst driving the van.

I know the van rack comes with folding arms to save space when not in use, unlike the wall rack. And I think the uprights might be made from a single rail instead of 3 pieces joined together (but the images are a bit unclear). My problem is securing the boxes to the wall rack. The ToughSystem Trolley has a locking mechanism, but I can't see an easy way of adapting this to the wall or van racks. Has anyone else managed to do this?