Repair your leaky faucet with the Ace 1Z-6C Cold Stem Barrel for American Standard. Fixing a dripping faucet is an easy and inexpensive alternative to replacing the faucet. Stopping the leak saves water, energy and money.Brass construction provides strength and durability,Use to replace American Standard 20563-08 stem,For cold water applications,Barrel stem only,ID length 1, broach Z,Complies with the reduction of lead in drinking water act