The T&S Brass B-3972-XS is a durable waste drain valve designed for efficient drainage in sinks with a 3-1/2" sink hole. It features a short lever handle for easy operation, allowing for quick opening and closing. The valve includes a 1-1/2" NPT female outlet and a 2" NPT male outlet, ensuring compatibility with various plumbing setups. Constructed from high-quality materials, this drain valve offers reliable performance and longevity, making it an ideal choice for both commercial and residential applications.