3/8"x 3-1/2", Zinc, Hitching Ring With Eye Bolt, This Medium-Weight Hitching Ring Is Designed For Animal Tie-Downs & Other Home & Farm Applications, Includes 2" Inside Diameter Ring #0 Wire, Welded, (.300 Diameter), Offers 3/8"-16 x 3-1/2" Lag Thread Eye Bolt Attached, Safe Working Load 160 LB.