Build a K'NEX coaster classic - the K'NEX Thunderbolt Strike roller coaster.
You can build with all-classic K'NEX parts including rods, connectors and original tube style track to create this motorised roller coaster that sends the cars and 2 K'NEXmen figures hurtling down 5m (17 feet) of track.
The completed coaster is 1.6m (5.3 feet) long and 0.95m (3.1 feet) high.
Requires 2 "AA" batteries (not included).
893 Classic K'NEX pieces
Click here and enter set code 51587 to download all the instructions for this set.