Little Treasures Space Rail Level 1 Marble Roller Coaster Kit with Steel Balls 5000mm, Warp, Model # 231-1 Great Educational Toy for Boys and Girls Space-track level two includes 116 pieces set - 5000mm of rail - and 2 steal balls included - requires batteries, batteries not included Begin your space rail journey here - build your own marble roller coaster - featuring a screw conveyor elevator and a complete loop Whether you're a first-time spacerailer or veteran from the days of space warp, explore the various levels of space rail's marble roller coasters Space-track is a line of do-it-yourself marble roller coasters that you can assemble and have fun building, including cutting tracks Once our science education toy is assembled, enjoy hours of rolling metal ball entertainment