Here at Coast Products USA, we pride ourselves on providing our customers with the highest quality toilet repair parts, and plumbing parts in the industry. Our Flush Valves, Fill Valves, Flappers, and all other plumbing parts in our line are manufactured with the highest quality materials, engineered for efficiency, and maintain the highest level of durability. We are experts in the plumbing supply and toilet repair parts industry and believe that innovation and sustainability are the cornerstones for quality parts. We maintain our quality, because our manufacturing facilities are monitored daily right here in the U.S.A.