This recessed pan fitting lashing ring is zinc plated and contains 2 fastening points for mounting to your trailer floor. The large flip-up D-ring anchor point is plated for durability, folds away when not in use, and is versatile enough to accept most tie down end fittings. The base will partially recess into the floor so you will need to cut a hole for installation. The pan will sit 1/2" above the surface of the floor. The d-ring will lay flat in the pan when not in use. These are popular for tying down motorcycles, atv's, snowmobiles, cars and more.