For Delta , Delex, and Peerless single handle or 2-handle washerless faucets. Includes 2 seats and 2 each long and short style springs per card. Do it carded. WARNING: This product can expose you to chemicals including DEHP which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.65Warnings.ca.govproduct. - 1,3-Butadiene