Rotating/Recessed D-ring 3500 lb. Capacity Tiedown w/ Backing Plate 8-Pack Rated Capacity* is 3,500 lb. (straight pull). WLL** is 1,166 lb. capacity *RATED CAPACITY: Also known as assembly capacity or break strength is the minimum load a complete assembly can withstand before failure in a laboratory pull test when the product is NEW. **W.L.L. (WORKING LOAD LIMIT): The maximum load weight a tie-down should be subjected to during normal use. To assist in making the proper tie-down choice the Federal D.O.T. requires the W.L.L. to be 1/3 of the Rated Capacity. The ring rotates 360 degrees moving in the direction of the pull. The base measures 3-1/2" in diameter. The beveled recessed dimension is 2-1/4" in diameter. The zinc coated backing plate measures 6" x 6" Thickness is 10 gauge ( 1/8"). Multiple hole configurations for use with 8 varieties of attachments. Each plate weighs 1.05 lbs.