"Twist, by Educo: Quadrilla is the next generation of marble runs. It is a system of blocks, tracks and accessory pieces that allow the energy of a marble to travel in a make-your-own path. Beautiful wood tracks and a rainbow of colored blocks, each with a different function, are the starting point for endless contraptions for marbles to drop to a new level, go right or left, or swirl in a funnel. Twist Basic is all about curves and circles. 13 curved tracks in three different sizes and 2 funnels are certain to inspire many afternoons of wholesome playtime.

41 Colored blocks in eight colors, 32 rings, and 12 accelerators make this a very substantial set.
205 Pieces.
Ages 4+ (not for young children)."