This children's bike track is a creative toy that includes multiple circular tracks and anti gravity , providing children with a unique play experience.The unique design of the rail car combination set allows the car to shuttle rapidly on the circular track, experiencing exciting speed and thrilling turns. not include carThe anti gravity allows the car to roll up and down along the inclined track, as if in a real roller coaster, stimulating children's imagination and adventurous spirit.The carefully designed track layout and circular design help cultivate children's spatial cognition and hand eye coordination abilities.This car track combination set not only provides entertainment, but also stimulates children's interest in science and physics, allowing them to learn and have fun while playing.Specifications:Name: 360 Degrees Spin LineMaterial: PlasticPakeage size:43*20*6cm/16.9*7.9*2.4inPackage Included:1 set 360 Degrees Spin Line