SID Air Chamber Valves are used to hold air in your Bestway Lay-Z-Spa air chamber. Replacement Air Chamber Screw Valve to fit later Bestway Lay-Z-Spa inflatable hot tub models as listed below. The valve fits the models below: Bestway Lay-Z-Spa Premium/Miami Model Number BW54112 (Later style) Bestway Lay-Z-Spa Vegas Later style (with either one valve or 3 valves) Riviera Saint Tropez New York Paris Vegas Miami Maldives Bali Tahiti Cancun Ibiza Havana Baja Rio St Lucia Bahamas Barbados Madrid Palma Fiji New York Product Features: Important for screwing and deflation Prevents air leakage from Lay-Z-Spa Direct replacement for a lost or broken valve Screw diameter 22 mm approx. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-86243 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and description, we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please do not hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!