STEM Toys 10 in 1 Electric Building Toy Cars set includes 113 pieces to build up to ten different electric-powered vehicle models for ages 3 and up. Plastic construction pieces with wheels, gears, screws, and a battery-operated motor included. Comes with a clear plastic storage box with yellow handle and latch for easy organization. Instruction manual features step-by-step assembly for 10 different vehicle models and a parts list. Designed to promote STEM learning with hands-on building, exploring science, technology, engineering, arts, and mathematics. Requires AA batteries to power the motorized vehicles. Includes tools for assembly as shown in the manual. Recommended for children ages 3 and older. Condition is good with all major components present but missing one gear from the original kit. Please review photos carefully for details and completeness.