Drain Buster Air Pressure Powered for Clogged Sinks and Toilets with 2 Plunger Heads Durable, Easy-To-Use Design. Has Two Interchangeable Cup Sizes Large one for Toilets and the Small One for Sinks. Unclog Toilets, Bathtubs,Shower Drains and Sinks without the use of harsh chemicals. Powerful compression chamber provides extra power without the extra work Made from plastic and rubber