Set of Interstar construction pieces in its own storage tray with lid. Contains: Baseboard and Approx. 58 Standard Pieces, 26 H-Shaped Connectors, 40 Straight Connectors, 16 Swivel Connectors, 24 Swivel Ball Pieces, 8 Wheels, 8 Axles, Set of Work Cards and Teacher's Notes. Can be fitted together in many ways allowing endless possibilities for construction. The pieces are brightly coloured and fit together easily.