Reach for the sky with the tallest KNEX coaster ever, which comes with 797 KNEX pieces; Youll love using the motor included in this set to send a car zooming seven feet high then all the way around the track; For extra fun, download instructions for an exclusive second coaster, the Cloud Bender. Models can be build one at a time. Our tallest roller coaster yet - an eye watering 7 feet tall; Build with 797 KNEX pieces including classic rods, classic connectors, and track; Use the included blaster motor to shoot the red coaster car to a height of 7 feet; Then watch it wind its way down the track to complete its journey; For extra fun, download instructions for an exclusive second coaster, the Cloud Bender. One supplied. Size H35.56, W8.99, D53.34cm. Batteries required: 3 x C (not included) plus . For ages 9 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.