The T&S Brass B-20K Parts Kit is designed specifically for the B-1100 faucet model. This comprehensive kit includes essential components for maintenance and repair, featuring one right-hand spindle and one left-hand spindle for smooth operation. It also contains four seat washer screws, six bonnet washers, two stainless steel bonnet washers, ten O-rings, and four seat washers. Each part is crafted for durability and reliability, ensuring optimal performance and longevity of your faucet.