PicassoTiles 2 Piece Swift Highly Detailed Race Track Truck Dinosaur Cars Accessories in Bulk Package Compatible with STEM Magnetic Tile Race Track Building Kits. For Kids Boys & Girls Ages 3. The PicassoTiles 2 piece colorful swift race track truck dinosaur cars accessories are compatible and work with other PicassoTiles Dinosaur race track sets or other magnetic racecar tracks. Watch the dinosaur race truck cars glide and zip through any smooth surface in an indoor or outdoor setting! Children ages 3+ can race against one another for entertainment while helping to promote problem solving engineering skills, hand-eye coordination, and to train fine motor skills. Comes with 2 dinosaur race car trucks that enable children to focus, pay attention, and utilize their imaginations to build the race track design using the various colorful shapes and pieces to create the structural design required to keep the cars running in loops. (1 x AA battery per car is required and NOT included)