Feeling Stressed? Bored? Inquisitive? Well, build the construction of your dreams and let those steel balls roll! This grown-up toy alows you to pretend to be investigating the fascinating interplay between the forces of momentum, friction, and gravity- when you're just playing around. This compact silver and black tin is crammed full of stylish 22 building blocks and 8 chrome balls to create your very own desktop marble run. Great toy for a Creative Executive or Fun Gift for Anyone in the Creative Field. 5"L X 2"H X 3.5" W Not suitable for children under 36 months due to small parts. LMAR$12.00 YOU MAY CLICK ON ANY ITEM TO SEE AN ENLARGED VIEW. If you have a question about an item, or would like to be notified about our special promotions please click here to send us an email. ©2010 Unusual Things, LLC. All rights reserved.