DANCO Reduced-Lead, Durable Brass Hot Stem for Kohler Faucets, 9C-7H, 1-Pack (15809B) N/A Imported This product is contructed of durable plastic and brass, meaning it was built for longevity, durability and reliability. Designed to fit with Kohler bath faucet models K10606, K10612, K10616 and K10621, with an ID length of 9 and a C broach. Perfect for hot water applications. This product DOES include a faucet seat with your purchase. This product is in compliance with the Reduction of Lead in Drinking Water Act.