Pololu's red plastic wheels with silicone tires are a versatile and robust solution for many robotic and hobby projects. Measuring 70mm in diameter, these wheels are designed to press-fit onto 3mm D shafts. They are compatible with a wide range of Pololu's motors, including their micro metal gearmotors and mini plastic gearmotors. Furthermore, these wheels can be used with several of Pololu's universal mounting hubs, serving as adaptable solutions for motors with different shafts. The product includes a pair of wheels. These wheels are perfect for a variety of applications. Whether you're building a small robot or a remote-controlled car, these wheels provide reliable traction and stability. The silicone tires ensure a firm grip on different surfaces, making your project versatile and adaptable to various terrains. One of the main benefits of these Pololu wheels is their ease of assembly. With their press-fit design, you can easily attach them to your motor's shaft without the need for additional tools or equipment. This makes them an ideal choice for both beginners and experienced hobbyists who value uncomplicated assembly processes. Unique to Pololu, these wheels stand out with their robust plastic construction and high-quality silicone tires. Combined, these features ensure durability and reliable performance, providing you with a product that can withstand the rigors of your project. Whether you're working on a simple or complex project, these wheels are sure to deliver the performance you need.