ROKR 3D Wooden Puzzle for Adults Model Kit Marble Run Craft Set Educational Toy Building Engineering Set Christmas/Birthday/Thanksgiving Day Gift for Boys Girl Kids Age 14+(LG501-Waterwheel Coaster)

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[ORIGINAL ROKR MARBLE RUN] An artwork to be built with your own hands! Traditional wood material, retro waterwheel design. If you want to buy a 3D puzzle, then this classic model kit is the one that you can not miss!
[INTERLOCKING DESIGN] Working in tandem through gears and organs. Turning the hand-crank, the steel marbles will travel along the track from two routes circularly. A vivid case of learning mechanics.
[A TRANSFORMATIONAL GIFT] Our marble run kits make great sensory stimulation toy gifts and STEAM & STEM puzzle gifts for adults and teens. Children under 14 may require assistance to assemble correctly.
[QUALITY THROUGHOUT] Utilizing high latitude selected basswoods. German laser-cut technology makes the error of each piece less than 1/200 mm. Spare parts are contained for accidental damage and loss.
[DETAILED INSTRUCTION] We offer a detailed how-to booklet, featuring easy-to-follow, step-by-step tutorials. Each wooden part is laser marked with a unique code. A suitable 3D puzzle for beginners. $42.99 $42.99

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