What we say...We recommend the special swivel for every hanging chair. This provides a gentle rotation in the correct direction. And when added to each end of a spreader bar hammock, prevents strangulation of ropes and cords in high winds. The Rotating Swivel Fixing allows gentle rotation in the right direction, which prevents any cords from becoming chafed or tangled. Those who do not have a power hook for their hanging chair require a swivel to deal with the rotation. At the same time, it protects the suspension from heavy turns, such as those from over-enthusiastic children. Combine with the Jumbo or Easy+ fixing to get your hanging chair hung and turning freely. (Email or call if you are unsure about ceiling/hanging heights.)With an abrasion-resistant nylon disk with a split pin and safety string.Perfect for hanging chairs and spreader bar hammocks.