The Summit Medical Equipment Company Small Animal Rebreathing Head is the finest rebreathing system available. It is manufactured from lightweight, non-reactive, non-corrosive materials and will not crack, dent, chip, peel or bend. It will provide years of trouble-free service. CO2 canister holds 3 pounds of CO2 absorbing material and is easy to clean and fill. Canister release is accomplished via a single handle. To ensure trouble free operation replacement seal kits will be provided for 10 years at no charge.