Little engineers can create their own rovers, choppers, or crazy rolling contraption with the Gears! Gears! Gears! Rover Gears building kit. Open-ended building allows for almost endless creations. Kids snap the gear pieces together and send their rover rolling. It’s an engaging way to help kids build STEM skills, motor skills, and practice their critical thinking. Works with all Gears! sets. Learning Skill: Engineering Recommended Ages: 4 Years And Up Measurements: 9 Length/Inches, 2.8 Height/Inches, 9 Width/Inches Assembly: Assembled Base Material: 100% Plastic Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.