A terrific looking standard desktop. Place the marbles in the top and press the handle to let them go. Choose one or all of them! An awesome loop d’ loop section that exits the ball into a “balls on track” element. Watch the video to see this element in motion. (FF to 1:21). See the flat spiral, tipping arm and great curvy, wavy tracks. 

100% stainless steel, TIG welded.