Have fun while learning and discovering the world of mechanics and engineeringnContains more than 250 interchangeable components including electric motor, rack and pinion steering wheelnCompletely illustrated manuals for assembling a tower crane, catapult, motorbike and many morenEncourages manual skill, brain power and creativitynMakes a perfect gift for family and friends!nMechanics laboratory that keeps children busy, creating things and having fun at the same time!