Want to know the secret to even more fun with your saucer swing? Maybe you want super smooth rotation with your aerial silks or need to stop your climbing ropes from kinking, hockling and twisting. Our hot forged magnesium alloy 30KN rotational device is the answer SAFETY FIRST: Made from high strength aluminum alloy material,strong and durable. Pass 30KN(6750lbs) breaking strength tested, 907kg (2000lbs) recommended working load limit. So what does that mean? You can sleep well at night knowing you’ve purchased a quality product that's more than qualified for the job. UPGRADE YOUR SWING:The swivel contains a high grade sealed ball bearing race. Smooth and Frictionless for 360 degree smooth rotation prevents rope rotation, kinking and hockling. No more twisted ropes or chains! SCREW LOCK : Come with 2 antirust SUS304 snap hooks whose manual screw gate reduces chance of open-gate failure. And don't have sharpe points that can cut rope like others do. IDEA FOR ALL KINDS OF RIGGING AND HANGING: Use with tree swings, hammocks, aerial silks and aerial yoga, Arborists and Aerial workers, safety lines, Aerial riggers, indoor and outdoor rock climbing Want to know the secret to even more fun with your saucer swing? Maybe you want super smooth rotation with your aerial silks or need to stop your climbing ropes from kinking, hockling and twisting. Our hot forged magnesium alloy 30KN rotational device is the answer