D Rings: Choose the perfect d ring to provide a safe and secure anchor point on your truck, trailer or RV, for your auto tie-downs. We recommend that you always use a d ring as an achor point for tiedowns. These rings are perfect for your truck, trailer and other vehicles. We also offer Assorted Hooks in three different sizes, Tie Downs for D Rings and Ratchet Buckles for use with D-Rings. HD Surface Mount D Rings This is a heavy duty ring with clamp and a 16,200lb Capacity. Dimensions: Ring: 3¼" W x 3½" H Clamp: 3" W x 1¾" H Zinc plated Steel Part No. 10111 Recessed Rotating D Ring This recessed rotating D-ring has a 6,000lb Capacity. Dimensions: 6" O.D. and 4½" I.D. Steel zinc plated. Part No. 10113 Surface Mount with Bracket This Surface ring with Bracket has a 900lb Capacity. Dimensions: Ring: 1½" W x 2" H Clamp: 1" W x 2¼" H Solid steel zinc plated. Part No. 10055 Recessed This recessed D-ring has a 5,000lb Capacity. Dimensions: 4½" x 5". Zinc plated Steel Part No. 10064 We have active vendor status with the CCR (Central Contractor Registration), so we can immediately fulfill orders for government contracts.