MATERIAL: Crafted from high-quality polypropylene plastic tubing, these quick connect fittings ensure long-lasting performance and easy installation for various water line setups. Our 3/8 OD tubing and 1/2 push to connect fittings provide a secure and leak-free connection. Ideal for quick and hassle-free repairs, these 3/8 to 1/2 water line adapters are designed for durability and compatibility, saving you time and effort in your plumbing projects.