The DAS/WV/JABO Joker Factory Errors .70" Killer Swirl Ee20 marbles are machine-made toys originating from the United States. These marbles feature a unique swirl style, perfect for collectors and enthusiasts. With a recommended age range of 7 years and older, these marbles offer a fun and engaging play experience for children and adults alike. The error in the manufacturing process adds a special element to these marbles, making them highly sought after in the world of marbles and workshops.