UGEARS Engine Clock 3D Wooden Puzzles For Adults Mechanical Puzzle Model Kits to Build Functional Kit with Moving Pistons Christmas Crafts 265 Pcs

Precise Working Mechanism: The 3D puzzles for adults engine clock model kit operates for approximately 5 hours on a single wind, featuring moving pistons and retrograde seconds, simulating an engine No Glue Required: DIY kits for adults wooden puzzle 3d assembles easily without the need for glue or special tools, ensuring a seamless and enjoyable UGEARS wooden model kits for adults experience Perfect Gift: Wood puzzle for adults crafts an ideal gift for fans of mechanical models, clocks, model building kits and DIY projects, providing entertainment for Birthday, Christmas or Fathers day Adjustable Timing: Fine-tune the clock’s in our model engine kits for adults projects accuracy by adjusting the weights on the pendulum and the ball at the top, ensuring precise timekeeping Stylish Design: Inspired by automotive engines, these wooden models for adults to build features a functional pendulum clock with a sleek design, including pistons, a speedometer and a tachometer