This product is suitable for massage bathtub accessories, swimming pool accessories, SPA accessories. Fine workmanship, smooth surface, wear resistance, aging resistance, long service life . The plug is made of high quality material, corrosion resistant, with good durability and stability. Threaded connection, easy to install and use, one replacement direct for the old or broken one. With a rubber ring, it has strong sealing and will not damage the return pipe due to leakage. Description of the product 5 pcs. Pool Threaded 1.5 Inch Return Junction Plug Dirt Plug Return Station With O-Ring Specific: Condition: 100% Brand New < p>Item type: winter thorns Material: Plastic + rubber ring white color Product size: about 5.5 x 3.3cm / 2.2 x 1.3inch (L x A) Thread Size: Approx. 4.8cm / 1.9inch Internal diameter: 3.81cm / 1.5inch Weight: about 107g / 3.8 one time Application: Hot Springs, Swimming Pools, Spa Package List: 5 x Winter Caps Use: 1. Please allow 1-2 inch error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as the standard.