The 65mm Robot Wheel BO Motors are a type of motorized wheel designed for use in small robots and other DIY projects. These wheels typically consist of a black plastic hub with a rubber tire, and are powered by a BO (brushed DC) motor mounted inside the hub.

The 65mm size refers to the diameter of the wheel, which is about 2.56 inches. This makes them suitable for use in smaller robots or vehicles that require more precise movements, as they offer a good balance between speed and torque.

The BO motors used in these wheels are typically 6V or 12V, and have a high torque output for their size. They are also fairly efficient, meaning they can be powered by smaller batteries without draining them too quickly.

The 65mm Robot Wheel BO Motors are a reliable and popular choice for hobbyists and robotics enthusiasts who are looking to build small, motorized devices.