comingfit Safety Rotational Device Swivel Rotator for Rope Climbing Hammock / Swing Setting Made of study 304 stainless steel. Popular for hanging swings, chairs, hammocks, climbing toys and so on; Wide eye openings can accommodate multiple carabiners; Free rotation without twisting and tangling ropes; Inside Width (Each Eye) : 21mm/ 0.8"; Overall Size : 90 x 35mm/ 3.5" x 1.3"(L*W); Weight limit: 400lbs.