The wait is finally over; This absolutely HUGE model is built entirely from over 5,500 Classic-KNEX pieces including rods, connectors, and 53 feet of original tube-style track. Measuring 8x5x6 feet and including three KNEX motors, this enormous coaster sends five sleek cars filled with 14 patented KNEXmen figures hurtling down the track. Intended for serious builders ages 16+. AC power adaptor included, 2 AA batteries required, not included. The ultimate coaster challenge with 53+ feet of original tube track; Over 5500 all-classic knex pieces. 5 coaster cars and 14 knexmen figures. This huge roller coaster when built is 8 feet length by 5 feet height by 6 feet depth; Recommended for builders 16+. One supplied. Size H33.02, W41.91, D52.07cm. Batteries required: 2 x AA (not included) plus . For ages 16 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.