Erector You might remember playing with Erector sets as a child. A lot has changed since then, however Erector is still making high-quality metal construction toys. There are a lot of new sets and new features as well as a number of classic sets. Motion Erector Motion sets are a combination of classic metal parts and new plastic pieces. Each set has a large number of different models to build with full instructions. All sets have moving parts, and the large sets include 6V motors. Design Erector Design are ultra-modern building sets. They all include special flexible plates that allow you to create realistic three-dimensional creations. Special Special Sets include the Classic Ferris Wheel, Special Edition Sets, and the Crazy Inventor Series. City Erector City Sets are designed for younger children from ages 3-8. The metal parts of the Classic Erector sets are replaced by plastic pieces and tools that make it easier and safer to build vehicles and other constructions.