HydroAir Jet Manifold Body 50-9072 Air Water Venturi Massage Jet Rev: ST BRAND NEW FREE SHIPPING!! This item is a single complete jet body venturi assembly. It contains the venturi jet, retaining rings and a smart water back-up prevention device. There is a small "ball" that when the air pressure is either off or low any water that makes its way up to the air induction port pushes the ball into the slot and helps prevent the water from getting into the air lines. Specs: Water line in: 3/4" ID Water line out: 1-5/8" ID Air line in: 3/8" OD (for use with flexible tubing that slides over the 3/8" male extension) If you are repairing or replacing your old spa jets or adding new massage jets to your existing spa or spa-tub, this product is a great way to make it happen! TERMS OF SALE: If, after receiving this item you discover that it was not the one you wanted, simply return it for a full refund within 7 days. You will have to pay for the return shipping charges. Refund is void if you have installed, used or damaged the item in any way. Item must be returned with its original box, packing materials and instructions (if applicable) Payment via PayPal must be received within 3 days of transaction and prior to shipping. SHIPPING: Any posted shipping rate only applies to the U.S. 50 States. All other regions/international locations will be charged for shipping based upon location. Please use the shipping calculator or request a shipping quote. International buyers: Customs fees, duties, taxes, tariffs other fees are your responsibility. Arrival time will depend on your location Feel free to ask any questions. Thank you for visiting!