Winter Pool Plug Set Winter Closure Set Accessories, Versatile, Professional Premium High-Performance Rubber Description: Material: The winter pool plug is made of rubber and PP material, making it durable and long-lasting. Product Dimensions: The diameter of the winter pool plug set is approximately 9 cm/3.54 inches. Function: The winter pool plug set protects your pool from freezing by preventing water from causing serious damage to the covered pipes. Easy to Install: Simply screw the winter plug onto the pump hose threads, and your pool will be protected from freezing. High Performance: Professionally manufactured winter pool plug with durable and stable performance. Specification: Material: PP Rubber Size Chart: Diameter approximately 9 cm/3.54 inches Package Includes: 1 x Winter Pool Plug with Matching Gasket Note: Please allow for slight errors of 1-2 cm due to manual measurement.