Toolocity GSB0240G 4-Inch Green Grinding Stone 240 Grit with 5/8-11 Thread
4" Green Grinding Stone 240 Grit W/ 5/8-11 Thread. Green grinding stones are made from green silicon carbide, which is more abrasive and 30% more durable than black grinding stones. They are used for grinding of granite, marble and other types of stones.
