I'm not completely happy with Integral Truck. One of the main reasons I purchased is that the mounts had a locking mechanism for the tool boxes. All the videos on YouTube and the website focus on the lock. When I got mine it did not have a lock. As it turns out, some have them, some do not. I had to go back to the website and do a zoom in "visual inspection" to see that my mount did not have a lock.
So if you are buying, double check that the mount you are buying has the locking mechanism. Its a good product, well made and I'm going to keep it but it sure is going to be difficult to rig up some chains with locks to protect my tool boxes.
*UPDATE* Integral Truck reached out to me after seeing my dissatisfaction with the lock issue and I must say... I'm very impressed with the customer service and them wanting to solve the issue. They responded to each email within hours even during the Christmas/New Year holidays which spoke volumes to me. We have worked out an exchange to solve the issue. Thanks again for making this a great experience!!