Ideal for the Hubelino marble run beginner. It contains all necessary elements for building dynamic and spectacular marble runs. Build tracks with the interlocking segments and recreate the models in our tutorials or experiment with your own designs. 200 piece set includes: 118 blocks, 1 base plate, 4 marbles and 77 run elements (12 slides, 4 terminals, 24 tracks, 20 turns, 4 U turns, junction, 8 tunnels and 4 slide turns). All Hubelino products are 100% compatible with Duplo bricks and are produced in Germany where they are tested to all European and US safety standards for toys. WARNING: CHOKING HAZARD -- Toy contains a marble. Not for children under 3 yrs.