This advanced level roller coaster building kit is enormous–and thrilling! Features multiple paths for steel balls to travel including a vertical corkscrew, a pendulum, seesaw drop, three-way split junction path, quadruple loop, and MUCH more! The ball’s journey ends (and begins again) on a battery-powered spiral conveyor elevator. Level 5 is the ultimate challenge for any STEM or DIY enthusiast! Comes with 682 pieces, 5 steel balls, and 32 meters (105 ft) of rail. Estimated assembly time is eight hours. Suitable for ages 14+. Overall dimensions are 95 x 34 x 41 cm (37.4″ x 13.4″ x 16.1″). Battery not included.