MOTORIZED CONSTRUCTION TOY This set features a battery-powered motor that gives life to connected K'NEX rods and pieces Instruction booklet this set comes with an instruction manual that provides step-by-step images to build the cobweb curse roller coaster. Instructions for a second coaster can be found online Manufacturered by K'NEX. OVER 470 PIECES The K'NEX Cobweb Curse Coaster Building Set contains 473 parts to create a working roller coaster!