I needed a way to secure my motorcycle chock so it wouldn't move while riding in my toy dump truck. My priority was not to drill holes in the floor for permanent attachment and I simply had to be removed. I have a Harbor Freight pillow that is unlike anything I've ever seen. It has two large eyebolts on the end of the front bar and I had to somehow attach it to the D-rings, but I didn't want to use ratchet straps for fear they might come loose when jumping or just give too much. and play with them. These load carriers are perfect! The D-rings are 45 inches apart and the brackets fit perfectly for my shoe size. They seem very durable. I have no complaints and have used them to tow over 1600 miles with no issues. They worked great and exceeded my expectations. Using two of them with a 175lb load limit each and a bike mounted on chocks that spread the weight, I'm not worried that they can do their job, as they are not always under load... Especially with a test load of 350lbs and a minimum breaking strength of 525lbs. Again perfect for what I need.