Follow the instructions to build 1 of 10 trucks then take it apart and build a new design of your own. The Meccano 10-in-1 Model Set are for ages 8+. No batteries required. Manufacturered by Meccano. DEVELOPMENTAL BENEFITS: As kids connect pieces and discover how the building system works theyre strengthening hand-eye coordination and problem-solving skills while exercising their imagination! For ages 9+ requires 2 AA batteries (not included). Includes: 390 parts 3V electrical motor 2 real tools and 1 instruction sheet. The 10-in-1 Model Race Truck Set comes with 225 durable metal and plastic parts plus real tools and instructions. Takes on even the most daunting terrains powered by the mighty 3V electrical motor! Rebuilds into 25 other cool machines based on the Mountain Rally race theme including a chase helicopter an ATV a pickup and much more! Mountain Rally Racer measures 9.75" long x 5.0" wide x 3.5" tall. Your creations are as big as your imagination! For ages 9 and up.