This is a set of outer rollers and the the associated hardware to upgrade four old style obsolete 8 in. Mecanum Wheels. This hardware can be used to add outer rollers to your existing set of old style obsolete 8 in. Mecanum Wheels or replace the entire set of outer rollers on your old style obsolete 8 in. HD Mecanum Wheels.

By adding the Outer Roller Kit to the old style obsolete 8 in. mecanum wheels we achieve a smoother rolling wheel. During the transition from one inner roller to the next, the outer roller hits the ground and decreases the amount of up and down motion of the robot.