Build the knex amazin 8 roller space themed roller coasterr motorised for exciting performance that sends the car up the chain lift and spiralling through the figure of 8 trackr this set comes with 448 parts primarily rods and connectors to build a knex thrill rider combine with the start shooter and ferris wheel to create your very own amusement parkr perfect for builders aged 7 years or above requires 2 aa batteries not included