High- design: Using advanced 3D printing technology, each gear has been precisely calculated and designed to accurate transmission, reduce friction loss, and improve overall efficiency. Wide compatibility: Tailored for Tuozhu A1 and A1mini series 3D printers, seamless docking, easy installation, making your projects smoother and more unimpeded. Material : The selection of high-performance and materials is not only and strong, but also has good wear resistance and resistance, extending service life and reducing maintenance costs. Application scenarios: Prototype development: Provide designers and engineers with rapid prototyping solutions to accelerate product development processes. DIY hobbies: Whether it is robot making, model car building or mechanical devices, complex gear transmission structures can be easily realized. Scientific research and exploration: Support the demand for transmission components in scientific research projects and help scientific research . Colour:A:Black Material:steel Package Contents: 1 * Gear 1 * Handle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.