78 PCS Plastic Gear Set – DIY Assorted Gears, Rack, Pulley, Belt & Worm Gears for Robotics, RC Cars, STEM Projects & School Electronics

This comprehensive 78-piece plastic gear set is an essential toolkit for any DIY robotics, RC car, or STEM electronics enthusiast. The collection includes a diverse variety of components—such as spindle gears, single and double gears, crown gears, worm gears, bevel gears, pulleys, racks, bushings, axles, and rubber bands—offering everything needed to design, build, and repair custom gearboxes and motion-transfer systems. Compatible with most standard hobby motors and 2mm shafts, this kit provides the mechanical flexibility required for school projects, small-scale prototypes, and intricate robotics builds.