37-Piece Product Description The Toysmith 37-Piece Marble Run challenges the imagination and provides hours of fun. The Marble Run contains curved tracks, ramps and chutes that fit together in countless variations. Once the course is assembled, drop the marbles in and watch them go. This set contains thirty-seven (37) plastic pieces of various shapes (curves, ramps and chutes), and fifteen (15) marbles. Components are easy to assemble, and made with small hands in mind. Sturdy plastic construction resists wear and stands up to hours of play. Assembly instructions included.