Tie Down Ring: 1)Carbon Steel Base,Casting Ring with spring 2)Zinc Plated 3)0.63kg/pc,Breaking Load 4000 lbs 4)OEM available Tie Down Ring,Heavy Duty Ring,Recessed floor ring1)Breaking Load 4000 lbs2)Per customer's design available.3)Small Quantity acceptable.4)Competitive Price. Steel Tie Down Ring,Steel Lashing Ring;Cargo Tie Down Ring