HONBAY 8PCS Fitness Exercise Sport Yoga Ball Inflatable Bed Pool Air Stopper Plug Pin + 4PCS Plug Puller 100% Brand new and High quality It is replacement plug adapter kit for gymball Yoga Ball Inflatable Bed Pool Air Stopper Plug Pin Fits for most gym ball size: 55cm, 65cm , 75cm and 85cm Includes 4 plug puller and 8 air stopper