Excellent condition - a beautifully engineered German designed toy that will provide many happy hours of entertainment and education - complete with original box, 50 new marbles and instruction booklet.  It's missing one of the small white round parts and two of the little red ramps shown in the last photo, but all the major tracks and construction blocks are present and correct so an almost endless combination of tracks can be made and enjoyed.

Manufacturers blurb below:

Twist & Rail 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. The possibilities are endless with the new Quadrilla Twist and Rail Set.

Suitable for Ages: 4 Years +