Feel the electricity run through your body with the Electric Inferno Roller Coaster Building Set, from KNEX; Using the 645 KNEX parts and pieces including rods, connectors, and track create this electric inferno that sends the coaster car hurtling through the twists and turns. Then, download exclusive instructions to build an incredible second model. Watch the coaster car hurtle through over 14 feet of track; Downloadable instructions to build a second roller coaster - mega monsoon; Includes a motorised chain lift and silver coaster car; Stands nearly 3 feet tall when built with a helix stabiliser and rotating spinner at the top; Combine with revolution ferris wheel, sold separately, to create your very own amusement park at home; Size H35.56, W8.26, D40.64cm. Batteries required: 2 x AA (not included) plus . For ages 9 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult.