These brightly coloured construction sets are suitable for the little hands of young children. The squares and cubes clip together securely but with the minimum effort using a section of high quality washable components to create an assortment of imaginative working models. Ideal for smaller groups 4 Large Wheels 2 small wheels and 1 axle counts as 3 components C2639 – Mobilo Group Set 120 Pieces C2630 – Mobilo Group Set 120 Pieces + Gratnells Tray + Lid