3D DIY Model Kit Owl Skeleton Mechanical Pendulum ClockStructure puzzle, restore details, log material, no glue required. Keep accurate time and make time an art. Ingenious craftsmanship, meticulous polishing, not easy to hurt hands. [Preferred raw materials] Selected high quality basswood. Safe and environmentally friendly, no peculiar smell. Take care of your family's physical and mental health. Wooden puzzles have passed a number of professional quality inspection certificates. Quality assurance, safe