4-Speed Gearbox Model Building Blocks Set MOC-45647--188PCS

4-Speed Gearbox Model Building Blocks Set MOC-45647--188PCS Designed by TechnicBrickPower: This powerful and multifunctional four-speed gearbox uses the new "Change over rotary catch" component to smoothly select from 1 of four speeds using a single lever. The gearbox implements 1st, 2nd, 3rd and reverses with ratios of 0.36, 0.6, 1.0 and -0.333 respectively. The rotary catch is kept at neat 90-degree angles using a mini stepper. This could be a great solution for your next MOC vehicle project.Comes with Detailed Instructions:It comes with detailed instructions and clear steps, it is quite easy to assemble the building blocks. Excellent Gift Choice: High-quality ABS plastic material, precision casting processing, the parts have no burrs and serrations, and the surface is smooth. After the building blocks being assembled, it is a good display model. It is an excellent gift for children on birthdays, Christmas, family gatherings and other holidays. Age Recommendation: 8+Warm Tips: Any qu