The T&S 163A Built-In Screwdriver Stop Assembly is a robust, high-performance component designed for commercial kitchen and restaurant faucets. Constructed from brass and chrome-plated for superior durability and corrosion resistance, this stop assembly ensures long-lasting performance even in high-use environments. Its 3/4-20 UN male threads provide a secure fit, while the screwdriver slot at the top allows for quick and easy installation or removal—saving time during repairs and maintenance. Whether you're servicing a new faucet installation or replacing a worn part, this assembly is built to handle the demands of professional kitchens, reducing downtime and ensuring smooth operations. The included seat washer screw, seat washer, and dual O-rings make it a complete solution for faucet repairs, while its compact dimensions (7/8 in. dia. x 1 3/8 in. H) ensure it fits seamlessly into standard commercial sink setups. Backed by a 1-year limited warranty, this T&S part is a reliable choice for chefs, facility managers, and restaurant owners who prioritize quality and performance in their equipment.