ALW's resin-printed barrels and drums are superior to other traditionally injection-molded options. Why? microscopic edges and features are sharper, the barrels can be hollow or in this case, semi-hollow. From the top to the first band the drum is hollow giving the illusion of well, a drum you could but fluid in. The rest of the way down is solid for durability. Also you get 20 of 'em! 

50 Gallon Drum (20 per pack)