Mytee Products ITI Low-Profile Shipping Container Skates with Plugs - Heavy Duty Moving Equipment for Easy Loading & Transport (4 Pack) - Perfect for Warehouse, Dock & Industrial Use

Arrived quickly and they look to be made well, BUT - they are not a snug fit on used containers. This becomes a problem if you are pulling or moving the container in a manner that causes that particular end of the container to lift from the ground, even very slightly. These would work best on flat, smooth pavement or concrete and being pulled smoothly forward. I attempted to use a backhoe to pull a container over rough ground that required the container to be be slightly lifted over ruts and every time the container came up, these devices fell completely off.