Feature:1. 7 Hole Nozzle: These bathtub nozzles adopt 7 hole design to achieve more even bubble distribution, providing a more comfortable bathing experience, has a wide range of applications2. Bubble Effect: The nozzle mixes air and water to form rich bubbles, adding relaxation in the water, enhancing the bathing or swimming experience, achieving a comfortable effect on the human body3. Wide Compatibility: Featuring a 27mm diameter cover, a 5mm outer diameter air inlet, and a 21mm inner diameter opening, this nozzle is compatible with multiple brands and models of bathtubs4. Easy to Install: The pool bubble nozzle has a compact size and lightweight design, making it easy to install and use. It can directly replace old or damaged nozzles, restoring a comfortable experience5. PVC Material: This nozzle is made of PVC, which has strong toughness and erosion resisting, ensuring durability in humid environments, making the nozzle suitable for bathtubs and swimming poolsSpecification:Item Type: 7 Hole SPA NozzleProduct Material: PVCTop Cover Size: Approx. 27mm or 1.1inAir Inlet Hole Outer Diameter: Approx. 5mm or 0.2inOpening Inner Diameter: Approx. 21mm or 0.8inApplication: SPA, hot spring, swimming pool, bathtub and other placesWeight: Approx. 35g or 1.2oz.Package List:3 x Bathtub Nozzles