UNIBlock Pullback Cars
Using universally-compatible building bricks, each of these kits contains detailed instructions, a pull-back motor, and all the pieces you need to make and race an iconic car. These kits include pre-labeled bricks instead of stick-on-decals, allowing the finished vehicles to look even more professional when put together by young children. The pull-back motor base and all pieces can be fully integrated and modified with other brick-building systems. No batteries required.