Being a great lover of rare peppers, I bought 3 of these towers spices. Each level of the tower is dislocated from the rest is closed with a screw cap: no risk to put everywhere! Capacity of each container: about 25 / 30g of black pepper. The mill is ceramic and just to screw the container of your choice and crushing. Be careful though, not to have the pepper on the table because it takes 30 seconds to remove the desired container, open it and screw it onto the mill etc. By cons in the kitchen impeccable '. Finally, the different levels are recessed into each other but may become detached from time to time. Moreover the mill at the top makes it all easy to reverse. Recommended due to the frankly brilliant and unique concept and good overall quality.