Buff N Shine 5.125” Grey Thick Uro-Wool Blend Pad is blended with 100% white wool in aggressiveness and enhanced with a proprietary wool blend. Buff N Shine 5.125” Grey Thick Uro-Wool Blend Pad is designed to cut a better finish than a normal white Uro-Wool pad. Buff N Shine 5.125” Grey Thick Uro-Wool Blend Pad can be used with all polishing machines, such as, simple rotary, dual-action, random orbit-, long-throw, high-action and gear-driven.