Danco seat model No. 18. Hot and cold 10L-1H/C. Durable brass construction. Fits Sterling OEM models: 10-000(N-602), 12-000, 13-000, 105-21, 115-21, 125-21, 135-21. Helps save water and energy. For hot-water and cold-water applications.Includes faucet seat. ID length 10, broach L. Complies with the reduction of lead in drinking water act.