The AndyMark Compliant Wheel 4in. 3/8 " Durometer 60A is designed for the manipulation of objects rather than robot movement. It is part of a system that allows for effective handling of rigid objects by creating a roller effect when multiple wheels are aligned on a driven hex axle. This wheel is characterized by its firmness, which is suitable for high-performance intakes and conveyors, and can support higher RPMs due to its 60A durometer rating. The wheel is compatible with Nub Bore systems, enhancing its versatility in various applications.