Koch Industries 2311371 Stainless Steel Swivel Round Eye Bolt Snap, 3-5/16-Inch with 1/2-Inch Eye Designed for use with rope, chain, straps, animal leashes and other home, farm and recreational applications Swivel round eye eliminates tangling Used for tie-downs, lifting and securing wires, ropes or cables Maximum load of 170-pounds Spring-loaded bolts provide secure closure; easy-open thumb lever