Thank you for viewing! (´∀｀)♪ I'm introducing a kit with a special gear mechanism that's fun to play with. How about incorporating a Geneva drive mechanism into your play? It's highly compatible with LEGO blocks, and you can connect it with other gear assembly kits for various ways to play! ٩(ˊᗜˋ*)و If you combine it with the separately sold planetary gear and bevel gear kits, you might even be able to create a system that's as exciting as a gacha machine!? |ω`) You can build it yourself by combining four simple parts. It requires some finger strength to assemble, so it's recommended for junior high school students and older. Of course, we can also provide it as a completed product(^^) Touching the wisdom of the past might help you with rich ideas!? ★Materials: ABS resin, made with a 3D printer ★Color: White We can accommodate other colors and color-coding for each part as much as possible. Color-coding is +100 yen per color. ★Can be attached to blocks. ★When you turn the drive part, the gear will stop and start moving. If you want a completed product, please comment. In addition, the shaft is attached using a press-fit method. While it can be inserted with finger strength, removing it can cause damage if you use the wrong technique, so please consider the completed product as non-disassemblable. We will provide separate instructions for simple assembly. For regular mail, HOPPEN will cover the shipping costs. In addition to this gear, we have the following types: 1: Planetary gear mechanism 2: Gear drive, crank-link quick return mechanism #blocks #gears #planetary #solar #science #LEGO #researchproject #homework #kit #Geneva