Not sure what to call them--cardboard barrels/drums, Metal bottoms and tops, with a locking band that seals the top on. They make good storage containers for whatever. We get bagged plastic color additives in them, and have no use for the empties. Several sizes, from maybe 7 gallon to 40 or so. Have 3 or 4 right now, empty a couple per month. FREE to anybody that wants them. Pickup in McMinnville. PM if interested.