About This Coffee Bean Cellar: Includes 12pcs glass coffee bean tubes with one-way exhaust valves, an elegant American walnut stand, and a stainless steel funnel for easy filling. Also comes with 4 additional replacement tubes (without lid) and spare silicone rings and valves. Single Dose Storage: The coffee dosing tubes is made of high-quality borosilicate glass each glass canisters that can hold up to 18g, 20g or 22g, depends on the roasting level of the beans One-Way Exhaust Valve Lids: The cutting-edge one-way valves on each lid are designed to release carbon dioxide (CO₂) emitted by fresh coffee beans while blocking external air. This key feature prevents oxidation, preserving the beans’ intrinsic flavors and extending their freshness. Elegant American Walnut Stand: The coffee vial set comes with a beautifully crafted stand made from premium American walnut. The stand not only provides a secure and stylish display for the glass tubes but also adds a touch of elegance to any kitchen or coffee shop counter. Stainless Steel Funnel: A complementary stainless steel funnel is included for easy, mess-free transferring of coffee beans into the tubes. This ensures that every single dose is precise, maintaining consistency in your coffee brewing. Airtight Sealing for Optimal Preservation: Our coffee bean containers come with silicone rings and air valved lids that secure an airtight seal. This feature is crucial for extending the freshness and life of your beans, ensuring each cup of coffee is as fresh as possible. Overview Brand : KNODOS Color : Walnut Material : Borosilicate Glass, Stainless Steel, Walnut Material Feature : BPA Free, One-Way Exhaust Valve, Dishwasher Safe Capacity : 20 Grams