Delve into the "nuts and bolts" of the construction site! Combining familiar parts, cutting edge design, and a 21st-century approach to collaboration, the OffBits system brings a unique new twist to classic construction fun. And with this set, kids get to use this fascinating system to create a big, powerful front loader! Or - Why not rearrange the parts to invent something of your own design? Young explorers become spare-parts artists when they start building with OffBits.