These polypropylene (PP) carboys feature large handles and base with molded grip allowing you to easily lift and pour. The material type and volume are printed on the outside of the carboy along with large, easy-to-read metric graduation marks that are certified to ±5% accuracy. Available in 83-mm or 120-mm sizes, the included PP cap with platinum-cured silicone gasket provides a tight spill-proof seal. The larger 120-mm neck size allows you to reach into the carboy for quick and easy cleaning.