Pololu's Wheel 90x10mm Pair is a set of two white plastic wheels, each boasting a diameter of 90mm. The wheels are designed to press-fit onto 3mm D shafts, making them compatible with a wide range of Pololu's motors. This includes their micro metal gearmotors and mini plastic gearmotors. For motors with different shafts, these wheels can be used in conjunction with Pololu's universal mounting hubs, serving as effective adapters. Each wheel is fitted with a silicone tire, ensuring smooth and efficient movement.These wheels are perfect for those seeking to build or upgrade their robotics or motorized projects. Their compatibility with a variety of motors and mounting hubs makes them a versatile choice, suitable for a wide range of applications. Whether you're constructing a remote-controlled car, a robot for a school project, or a prototype for a larger scale project, these wheels provide the reliability and performance you need.One of the standout features of these wheels is their silicone tires. This material is known for its excellent grip, ensuring your projects move smoothly and efficiently on a variety of surfaces. The wheels are also designed for easy installation, press-fitting onto the motor shafts without the need for additional tools or hardware.In conclusion, Pololu's Wheel 90x10mm Pair is a high-quality, versatile option for anyone in need of reliable wheels for their motorized projects. With their easy installation, compatibility with a variety of motors, and high-performance silicone tires, they offer an effective solution for a wide range of applications.