The T&S Brass 000664-20M Seat Washer Holder is designed specifically for use with B-1200 and B-0101 faucets. This essential component ensures a secure fit for seat washers, enhancing the durability and performance of your faucet. Each master pack contains six holders, providing ample supply for maintenance or replacement needs. Crafted for reliability, this part helps maintain optimal water flow and prevents leaks, making it a vital addition to your faucet parts and accessories.