For 100 years Erector 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. For their 100th anniversary, this great mechanic building company is making a brand-new Anniversary Case - Erector 643 pcs Deluxe Building Set. This incredible building set includes 25 models from the history of Erector. You can construct your own models of racecars, helicopters, trucks, and cranes. This Special Edition Erector 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 643 pieces (the most ever in an Erector set) 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 Anniversary Case - Erector 643 pcs Deluxe 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!