Box is a bit rough with some tears to the top and front flap, but still closes fine.

This set is used but still has many sealed bags included. Appears complete and operational

The K'NEX Ultimate Big Air Ball Tower #63172 is a rare 2004 release that is still in complete working order. This plastic building set, with a roller coaster theme, is designed for ages 10 and up. The set comes in its original box packaging and is part of the Big Air Ball Tower product line. Perfect for collectors or enthusiasts of building toys, this set offers a unique and challenging building experience with its Ultimate Big Air Ball Tower design.