Keep your beans at the best freshness with these airtight single-dose cellars Tubes can be used to coffee beans, tea, spices, vegetable candies and more. 12 sealed tubes available for well organized storage Opening and closing coffee bags or storage containers repeatedly exposes the coffee to the outside air, leading to oxidation and staleness. With set you can keep your coffee beans . Great for espresso and filter coffee. The weight of the coffee beans used in the tube, whether 18g, 20g or 22g, depends on how roasted the beans are Tube holds up to 22g coffee beans for light roast, 21g for medium roast and 20g for dark roast Italian Oil Roast 18g Type: coffee bean packaging color:As shown Material:wood + glass Package Contents: 1 x 12-well base 12 x test tubes Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.