Koch Industries 231441 Rigid Round Eye Malleable Snap Hook, 3-1/2-Inch with 5/8-Inch Eye, Zinc Finish Designed for use with rope, chain, straps, animal leashes and other home, farm and recreational applications Rigid eye design ensures stability and strength Used to connect lifting and rigging attachments Maximum load of 650-pounds Spring-loaded bolts provide secure closure; easy-open thumb lever