Birds prefer moving water! Our dripper provides that. It's designed to fit ANY bird bath, guaranteed! The universal dripper is made of stainless steel and coated to look like copper. It won't corrode. The dripper includes: Stainless Steel dripper tube, needle valve to control drip, 50 feet of plastic drip tubing and a plastic Y-valve. The connection between the dripper and tubing is solid brass. This is a quality product that will last for years.