Moen 1222 One-Handle PosiTemp Faucet Cartridge Replacement for Moen Tub Shower and Shower Only Configurations, Brass and Plastic Faucet cartridge replacement for Moen One-Handle PosiTemp tub shower and shower only faucets PosiTemp valves consistently maintain water pressure and control temperature Durable brass and plastic construction Engineered for hassle-free installation and removal Ideal for repairing problematic faucets instead of replacing them