Gorilla Playsets 8mm Zinc Spring Clips, Set of 2 - Attaches Swings and Other Accessories Rated for 300lbs Set of 2 clips; used for attaching swings and accessories to swing hangers. Spring-loaded opening on the side Diameter: .65" of small loop and 1.23" diameter in the large loop Clip opening fits items up to .612" in thickness Length: 3.45"