Constructed of a strong and durable brass, meaning it was built for longevity. A perfect fit for American Standard kitchen, bathroom and tub/shower faucets, with an ID length of 2 and K broach. This was designed for hot water application. A faucet seat is included with your purchase of this item. This is in compliance with the Reduction of Lead In Drinking Water Act. Constructed of durable brass Fits American Standard kitchen, bathroom and tub/shower faucets For hot water Includes seat ID length 2, broach K Complies with the reduction of low lead in drinking water act