GM CLIMBING 30kN Rope Swivel Safety Connector Rotational Device Spinner for Climbing/Swing Set/Aerial Dance ANTI-TWIST  30kN Rope swivel solves rope twisting and tangling problems. Its usually used as connector for anti-twist purpose. SUPER SMOOTH  Due to the stainless steel ball bearing, the swivel offers smooth and frictionless rotation. VERSATILE  Originally for rock climbing but also widely used in web swing, tire swing, disc swing, hammock, aerial silks and any other swing set. GREAT DURABILITY  The rotational device is made from hot forged aluminum alloy, this makes it stainless and extremely sturdy. SAFETY FIRST  CE1019 EN354 certification. The break strength is rated at 30kN / 6700lbs, which ensures your safety while using.