We have been unable to get Quadrilla supplies for a year now but the good news is that a new consignment will arrive July 10th. Keep looking out for it! We do still have stock of a few accessories (see blow)

The Quadrilla Marble run is a different concept.  The start point is a set and they come in various sizes. Buying accessories allows this to build into a fascinating tower of interlocking parts directing the marbles this way and that and round swirling spirals, see-saws and shoots. Requires an inquisitive mind to see all the possibilities.