The AndyMark 4in. Compliant Wheel Nub Bore, Durometer 50A is engineered for the manipulation of objects rather than the movement of robots. This wheel is part of a series designed to accommodate variations in driven objects, making it ideal for high-performance intakes and internal conveyors. The blue wheel, with a durometer of 50A, offers a balance of firmness and compliance, allowing for effective handling while supporting higher rotational speeds. It is specifically designed to integrate with the Nub system, enhancing its versatility in various applications.