Danco 10472 4Z-24H Hot and Cold Replacement Stem for American Standard Faucets, 1-Pack, Pack of 1, Brass AMERICAN STANDARD FAUCETS - The brass replacement faucet stem is made to fit most American Standard sink and tub/shower faucets such as American Standard tub/shower OEM #994053-0070A. HOT & COLD WATER APPLICATIONS - The American Standard faucet stem is made for hot and cold water applications (4Z-24H/C). DURABLE CONSTRUCTION - The durable plastic and brass construction provides strength and reliable performance. CARTRIDGE-TYPE STEM - The faucet stem is designed as a cartridge-type stem with no faucet seat required. ID length 4, broach Z. COMPLIANT - The 4Z-24H H/C replacement faucet stem for American Standard complies with the Reduction of Lead in Drinking Water Act (RLDWA)