Spark the creative engineer in your child with this Knuckle Strutz combo set.This double set of the MorphoMechanic Set gives you plenty of pieces (over 1000) so you can build incredible structures and models! Knuckle Strutz components can be fitted to rotate or pivot. Just snap the inside and outside pieces together to create a wide variety of building components. Providing hours of fun, this set makes a great gift for any child.Look to Overstock.com for fantastic savings on great gift ideas.Recommended for ages 6 to adult.