Ages 12+ SCIENCE & SOLAR POWER: Set your rover in direct sunlight to get it moving! Check out the amazing details – from adjustable back wheels to a moveable crane – and discover scientific facts in the instruction guide. REWARDING CHALLENGE: Gearjits kits combine traditional building with principles found in leading STEM toys. You will exercise your fine-motor skills, creativity, perseverance and dexterity. BUILD TOGETHER: Enjoy this screen-free way for kids to connect with their parents or grandparents. It’s a highly-satisfying, educational experience for both teens and adults – a perfect bonding project to do with older children. INCLUDES: 252 pre-cut pieces, 20 shaft sleeves, 8 square shaft sleeves, 3 gears, 1 assembled gear set, 4 steel shafts, 1 solar motor set, 4 rings, 1 metal chain and detailed, easy-to-follow instructions. (Ages 12 and up)