For 100 years Meccano has been making revolutionary construction sets that are adapted to fit in little hands, use real tools, move like actual machines, and are very realistic. This incredible Meccano building set includes 25 models from the history of Meccano and its US brand, Erector. You can construct your own models of race cars, helicopters, trucks, and cranes. This super cool construction toy includes all-new parts such as a 6V motor (requires 4 AA batteries, not included), ball-bearing body rotation and movable feet, 2 clutches to activate the arm, a pulley system that will actually make your models move and much more. With the enclosed tools and 638 pieces the young mechanics can build any model that they design. All building pieces, but a few smaller ones, are made of kids-friendly metal. The Meccano Super Construction 638 pc Motorized Building Set from Educational Toys Planet comes in a sturdy storage case, so your young mechanic can keep their in-progress creations or parts in order, and a detailed instruction booklet. Just add your engineering imagination and let's the building fun begin!