Designed for Durability and Long Lasting-This replacement cartridge is made of durable brass and plastic construction. It can work normally on your Moen faucet in the next few years.Improves Water Flow-Made of brass and ultra-durable plastic, The Essential Values Moen shower valve cartridge is engineered to keep your plumbing working at peak performance with no leaky valves or hard-to-turn handles.your shower will run smoothly and efficiently.The Perfect Fit-One-Handle PosiTemp Faucet Cartridge Replacement-- is designed specifically for use with Moen One-Handle PosiTemp tub and shower faucets. It featured with brass and plastic construction and is designed for easy installation.Easy Installation- Moen PosiTemp Faucet Cartridge Replacements can be replaced easily, allowing you to repair a single component easly instead of having to replace the entire showering handle fixture.NOTE:please make sure this product fits your Shower Faucet before you kindly place an order .Includes-Moen 1222 One-Handle Posi-Temp Faucet Cartridge Replacement for Moen Tub Shower and Shower Only Configurations, Brass and Plastic.