The DANCO stem repair kits contain all the necessary parts to rebuild your faucet stem and stop that drip. A leaky faucet wastes both water and energy. This kit is designed to repair Delta Deled Faucets. Danco is one of the largest plumbing repair, replacement and remodel suppliers in the home improvement industry. We are largely focused on empowering Do It Yourself consumers with affordable plumbing products and solutions which create new and refreshing décors for bathrooms and kitchens.