The universal steep curve puts everyone in a spin; fun colorful balls speed down here just as well as ball-convertibles or vehicles with momentum motor. 

• This expansion set is compatible with ALL Kullerbu sets, accessories, balls and vehicles. Adds even more flexibility to Kullerbu play for ages 2
• Insert, click, done assembling a play world could hardly be easier. The well thought out system of connecting elements ensures maximum stability, both on the floor and in the air.
• Contents include: 1 universal steep curve, 1 column, 1 base, 2 floor connectors. Made of plastic with a beech wood column.
• Nothing can easily shake the Kullerbu tracks. The ramps, straight tracks, and curves have a hole on their lower side, into which the pins of the plastic connectors (sold separately) snap snugly into place.
• When your Kullerbu set is ready to grow upwards or in length then you need more "construction material" in the form of columns, straight sections, curves and connecting elements. All this is included in the practical Kullerbu expansion sets.