Technical Products #10 Winter Plug SP210 The Technical Products #10 Winter Plug SP210 is a durable, reusable solution for winterizing pool plumbing and protecting pipes from freeze damage. Engineered for use in 1-1/2 inch fittings, this expansion plug helps ensure a safeguarded pool through harsh winter conditions. Key Features and Benefits Creates a tight, reliable seal for 1-1/2 inch PVC pipes and pool fittings Made of high-quality rubber, heavy-duty nylon, and marine-grade stainless steel hardware Protects against moisture entry, freeze cracking, and costly winter damage Quick and easy installation with a large plastic wing-nut Usable in multiple locations: pool returns, skimmers, main drains, cleaner lines, and spa jets Reusable season after season with non-corrosive construction Can also be used for pressure testing, leak detection, and plumbing repairs "Plug and forget"—stays secure all winter for hassle-free spring opening Specifications Model/Part Number: SP210 (#10 Winter Plug) Fits: 1-1/2 inch PVC pipes and fittings Full Diameter: 1.89 inches Materials: Premium rubber, marine-grade stainless steel bolts & washers, heavy-duty nylon wing-nut Weight: 0.3 lb Seal your pool plumbing with confidence using the Technical Products SP210 Winter Plug—trusted for long-lasting freeze protection and worry-free seasonal transitions.