Meccano Erector, Motorized Mountain Rally Vehicle, 25 Model Building Set, 407 Pieces, for Ages 9+, STEM Construction Education Toy The 10-in-1 Model Race Truck Set comes with 225 durable metal and plastic parts, plus real tools and instructions. 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. 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. 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.