K'NEX Typhoon Frenzy Roller Coaster.
K'NEX has a huge set of rods, connectors and track that can build a huge the fastest, most daring roller coaster. Build it tall with a winding drop or make multiple dips and turns. With 19 feet of track, the silver coaster car is on a ride of its life. If you can imagine it, K'NEX allows you to build it.
With the amount of pieces and complexity of the build, this set is recommended for ages 9 and up.
The K'NEX Typhoon Frenzy Roller Coaster can be purchased online at the K'NEX website or at Toys R Us. It retails for approximately $39.99.
Disclosure: I received this item to review. All opinions are my own.