Length: 8.625″ O.D : 5.0″ I.D : 27mm Kamparts PU Roller pads will provide the best protection and padding for your workouts. Sealed, non-porous finish means that the pad will not soak in sweat, is easy to clean, and won’t need further maintenance other than a simple wipe. This full injection PU molded roller is the all in one pad.