This large 5ft x 5ft RBS is now at the Lake Geneva Youth Camp. Grasp the handle and give it a turn to lift the balls up to the top. They can take up to 3 different tracks as they make their way back to the bottom. The best in manual entertainment - this piece will keep you occupied for quite some time as you watch the marbles that you've lifted come rolling back down. 100% stainless steel and 1-3/8" marbles.