Energy Bead Track Ball Set Handmade Assemble Mechanical Engineering Electric-Powered Model STEAM Science Experiment Pare

Description 1 Natural wood Choose the box made of natural wood symmetrical and neat carving art2 Carefully Polished Control the occurrence rate of Burr below 5 1000 and increase the smooth hand feeling of the product3 Fine cutting Card slot is accurate splicing is smooth laser cutting error is controlled within 5 umSpecification Name Energy Bead Track BallMaterial WoodenSize 187x212x143mmParts About 78PcsBattery 1 x AA Battery Not Included Package Included 1 x Energy Bead Track Ball Set