Shurhold Pro Dual Action Polisher The increased Orbit and pad size make this is a more powerful Polisher. The unique Dual Action motion will still protect your finish and give you the professional results you desire. The PRO is a more powerful version of the original Dual Action Polisher. It works using the same oscillating motion but can cut through oxidation faster with its higher OPM. The PRO also has an impressive 21mm throw, which means you can cover a lot of ground quickly. 6 Quick Change