This adaptable and expandable ball track is a great introduction to the Kullerbu Play World with exciting elements for Paul the ball to pass through. Features a gateway, spinning windmill, ringing bell and varying levels for the 3 included balls. Insert, click, done assembling a play world could hardly be easier., Nothing can easily shake the Kullerbu tracks even when the overly eager little master track builder accidentally bumps into them. The ramps, straight tracks, and curves have a hole on their lower side, into which the pins of the connecting elements snap snugly into place. Kullerbu is the perfect combination of wood and plastic parts and highlights the advantages of each material making this sturdy play system from HABA one that will last for your child's entire childhood - and beyond. Thanks to its large parts, which cant be swallowed (ball Ø: 1 3/4 inches), they ensure playing fun for children from two years of age. 25 Piece Set Includes: 1 windmill wheel ramp, 1 large gateway, 1 archway with bell, 1 steep ball curve, 2 straight tracks, 2 ramps, 10 connecting elements, 1 start block, 3 columns, 1 ball Paul, 1 ball cat and 1 ball. Please Note, while ALL Kullerbu sets and accessories can be combined, certain elements (including the steep ball curve and gateway in this set) will not accomodate Kullerbu vehicles. Kullerbu is also attractive and exciting for older children because its elements can be combined with fantastic effects and cute illustrations. This stimulates creativity and imagination and encourages children to experiment.