Yalis 10 Fitness Exercise Sport Yoga Ball Inflatable Bed Pool Air Stopper Plug Pin with a Puller 10 Pcs Yoga Ball Inflatable Bed Pool Air Stopper Plug Pin Fits for most gym ball size: 55cm, 65cm, 75cm and 85cm. Material: Plastic Length: 5.2cm Top diameter: 1.2cm Please recognize the Yalis package, Comfirm the products in complete and good quality.