CDX Blocks Brick Construction Sidewinder Roller Coaster Building Set. The Sidewinder blazes new trails by being the first block-based looping roller coaster kit. Modeled after the contemporary steel style coasters. This fun and easy to assemble kit features realistic operation using a chain to haul the train to the top of the hill, with gravity taking over from there. From the CDX Blocks line of block based (Lego compatible) roller coaster kits.
