The Learning Journey Techno Gears Marble Mania Quest (200+ pcs) Set out on a search for fun and excitement with Techno Gears Marble Mania Quest This adventure themed marble run features a hand crank that turns a bucket and chain pulley system to lift the marbles to the top of the build where they twist and turn down the tracks for an action packed run! More than 200 pieces will provide children hours of fun construction building This product aligns with the Science, Technology, Engineering and Math standards For ages 6 and up Assembly time: 3-4 hours More than 200 colorful construction pieces Interlocking plates, gears,3-D connectors, tracks, andfun obstacle Marble chain lifter and hand crank Builds confidence as childrendesign structures that moveand work Compatible with all Techno Gears sets