Clock Work Roller Coaster Building Set - K'Nex Puzzles Unlike most mass-market puzzles which

Unlike most mass-market puzzles which are sealed via an overwrapped bottom

Build a solar catamaran driven by a fanboat-like propeller

as parts may cause choking in infants

The fenders cover the tires so you can bang against your driving buddies without getting tangled up

This is the Gear Box Set for the HPI Savage XS

Clock Work Roller Coaster Building Set - K'Nex Puzzles Unlike most mass-market puzzles whichTick, Tock goes the coaster car on the K'NEX Clock Work Roller Coaster Building Set! The hour hand inspired, motorized coaster car lift sends the coaster car up the track and down a ride full of twists and turns. This set comes with 303 parts, primarily rods and connectors, to build an exciting working roller coaster ride! The K'NEX Thrill Rides line allows children to build an entire theme park in their room as heart pounding roller coasters,