Stock #STWMM – Steel Works construction set comes with real steel parts, step by step illustrated instructions for building 1 of 10 different models, and all the tools needed to assemble the models. Every model in this set is designed with mechanical actions. Watch your model come to life when you push it forward or backward. Best of all, Steel Works sets can be combined to create even bigger models of your own creation. The only limit is your imagination. Made by Schylling, over 300 pieces, for ages 8 & up.