Get ready for the ride of your life with this awesome slingshot coaster, which stands at more than 2.5 feet tall and has 347 KNEX pieces; You control the action with the slingshot launcher. Over 340 knex parts. Over 13 feet of track to watch your yellow coaster car hurtle around; Create an amusement park right in your very own home by collecting the clockwork roller coaster building set and revolution ferris wheel building set (sold separately). Recommended for builders age 7+. One supplied. Size H27.94, W38.1, D5.08cm. Batteries required: 2 x AA (not included) plus . For ages 7 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.