Winterizing Plug, Pool Filter Drain Plug, Threaded with O-Ring Swimming Pool Plugs, Solid Sealing, Winterizing Plug Pool Return Plug 1.5 Inch High-quality materials The bottle cap is made of high-quality materials, and the winter caps on the ground and ground swimming pools in winter are corrosion-resistant and have good durability and stability.< /p> Easy installation Universal external threaded plug, threaded connection, easy to install and use, directly replace the old or broken one. Strong sealing This oil return plug is equipped with a rubber ring, which has a strong seal and will not damage the oil return pipe due to leakage. Finish This filter drain plug has fine workmanship, surface smooth, wear resistance, aging resistance, long service life, and can withstand extremely cold temperatures without slipping or shrinking. Multi-scene use This winter grip is suitable for , pool and spa accessories. Note: The data is all measured manually, please allow 1-3cm error, due to the difference in light and display, there will be a certain difference in color, the actual object received shall prevail.