descriptionSID air valves are used to maintain air in the Bestway Lay-Z-Spa air chamber.Replacement air channel screw valve for later models of Bestway Lay-Z-Spa inflatable hot tubs as listed below.Standard valve for models :Bestway Lay-Z-Spa Premium/Miami Model Number BW54112 (Later Style)Bestway Lay-Z-Spa Vegas Later Style (with built-in or 3 valves)RivieraFrance Saint-Tropez. kgmNew YorkParisVegasMiamiMaldivesBaliTahitiCancunCity in California, USAIbizaHavanaBajajapan. kgmRioSaint LucyBahamasBarbadosMadridPalmaFijiNew YorkProduct Features:Necessary for screws and deflationPrevent air from Lay-Z-SpaDirect replacement for lost or damaged oneScrew diameter 22mm approx.Equipment list:1X added added marine gas