2x Winterizing Plug for In-Ground/Above-Ground Pools Premium Expansion Pipe Plug for Swimming Pools 45mm Diameter Description: Quality Material: This pool winterizing plug is made of premium rubber and a stainless steel bolt, which is resistant to low temperatures and cracking, ensuring long-term durability. Replacement: The pool winterizing expansion plug serves as a replacement for old or damaged parts. Easy Installation: The sturdy rubber plug is easy to install and remove, providing convenience in use. High Performance: Premium pool accessory with a smooth surface, high performance. Package Includes: 1 Pool Winterizing Plug Size Chart: Diameter 4.5cm/1.77in Package Includes: 1 Pool Winterizing Plug (2 Pack) Note: Please allow slight 1-2cm errors due to manual measurement.