The Kannastor Original Storage Puck is a pocket-sized storage container for your herbs. The item has smooth threading for easy access and usage. The metal container is airtight when tightened and is also smell-proof. The item is a lightweight 2 oz. and measures approximately 2″ in diameter. The storage puck is modular in design and can connect to any of the 2.2″ multi-chamber grinders in the GR8TR collection. The storage puck is made from premium food grade 60/61 hardened aluminum ensuring great durability.