The T&S Brass 010616-20M is a set of six old-style B-0290 seats designed for faucets manufactured before 1997. Each seat features a 24 threads per inch (TPI) design and a 12-point configuration, ensuring a secure fit and reliable performance. Ideal for maintaining and repairing older faucet models, these seats provide durability and longevity, making them an essential component for plumbing professionals and DIY enthusiasts alike.