Make room for the tallest K'Nex model roller coaster ever with the Sky Sprinter Roller Coaster Building Set, standing at over 7 feet (2.1m) tall! Build a mammoth motorised coaster from 797 pieces and send the coaster car zooming along 24 feet (7.3m) of track! For added fun, download instructions for an exclusive second roller coaster, the Cloud Bender, which can be constructed from the same kit.
