ROKR 3D Wooden Puzzle for Adults Model Kit Marble Run Craft Set Educational Toy Building Engineering Set Christmas…

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【ROLLER COASTER DESIGN】This Waterwheel Coaster 3D puzzle is like a real roller coaster,after the assembly,the ball can be rolled along the track.These designs are inspired by real-life mechanisms.We believes that building these beautiful working models should be fun.4 kinds of 3D wooden coaster craft kits brings adults back to childhood,and help children enjoy a journey of exploring woodcraft construction.Exciting and educational!
【FUN AND EDUCATIONAL】Teens and adults aged 14 and up will enjoy building their own 3d wooden puzzle marble run set.Creating the wooden puzzle model kit is challenging and may take a few hours,depending on your pace and patience.These building sets will draw out and propel your child’s ability to plan and build their own structure like a true architect or engineer.