Meccano Tower Bridge Model Building Set, 742 Pieces, For Ages 10+, STEM Construction Education Toy ICONIC MODEL - Build the world-famous Tower Bridge, featuring iconic towers, and a drawbridge that really opens. BUILD A DISPLAY - Finished model measures 22.25 long x 2.5 wide x 4.5 tall and is a display-worthy historical replica. STEM DEVELOPMENTAL BENEFITS: As kids connect the different parts together and discover how the building system works, theyre strengthening hand-eye coordination, fine motor skills, problem-solving skills, while exercising their imagination! DEVELOPMENTAL BENEFITS: As kids connect pieces and discover how the building system works, theyre strengthening hand-eye coordination, fine motor skills, problem-solving skills, while exercising their imagination! For ages 10+. No batteries required. Includes: 742 parts, Real wrench and hex tools, Instruction sheet