Roaster Pull BackDescription Rev up your creativity with the iM. Master Mechanical Master Roadster! This pull back model set lets young builders construct a sleek, high speed roadster, blending classic design with thrilling motion. With detailed mechanical components, a sporty frame, and pull back action, this roadster is built for fast paced fun and hands on learning! Build, Pull Back & Race! Once assembled, simply pull back and release to watch your roadster zoom