The Tuf Wear ceiling hook with swivel ensures that your punching bag is securely attached to the beam to provide the necessary stability, comfort and motion which is imperative for preventing the hanging straps from wearing down rapidly. The hook and swivel is essential for a leather punch bag, but using it for a synthetic leather bag also makes a great idea, because it extends the longevity tremendously. Also, all fittings are included to ensure an effortless and swift setup.