Techno-Balls 505 Marble Run Tower
£30.00

A Twin Tower Double Spiral Techno Ball Tower. With 505 parts to assemble you build a HI-Tech Perpetual-Motion Power-Driven Marble Run. It has its own power source so the marbles can keep going round and round. A pretty good construction set with modular snap together parts. Technical and ingenious, but doable. A good technical present and a great name.