MK Diamond 166422 5-Inch Buff Premium Resin, White White buff premium resin wet polishing disc 5" diameter polishing disc Maximum revolutions per minute of 3,700 (RPMs) Designed to achieve a scratch-free highly polished finish on all straight or contoured granite and marble edges Hook and loop backing allows for fast disc changes 8500 grit white buff for use with marble and granite White buff used for final buff on light colored stone without marking material Buff to a very high mirror like shine MK Diamond field proven quality