Add these U.S. Military Surplus Cargo Tie-down Plates to your trailer to help keep cargo secure during transport. These are made from heavy-duty steel and will accept rope or cable up to 1" in diameter. The Plate is 3" in diameter, 1/8" thick and has four 3/8" bolt holes for mounting. With the assembly, it is 1" thick overall. You'll need a 11/8" diameter x 1/2" deep pocket in order to mount flush to the surface. It's an inexpensive way to add military-grade cargo-carrying security, and you'll be thrilled with the results.