K'NEX Drop-n-Swing This Drop-n-Swing is part of the collectible Collect and Build Amusement Park Series This set includes instructions to build a drop-n-swing ride 2 feet high - may be combined with other sets in the series to make new rides! Each set is motorized for exciting thrill ride performance Includes 432 pieces Combine this set with others in the Amusement Park Series to create even more thrilling rides!