WorldPac (Pack of 10) Recessed Tie Down D Rings with Round Mounting Measure 4 1/2" x 4 1/2" with Round Mounting Points 1,700lbs Working Load Limit Rated at 5,500 lb breaking strength Zinc Plated for Rust and Weather Protection Great for Truck Trailers, Utility Trailers, RV's, Auto & ATV Tiedowns, Race Car Trailers, Farm applications and many more