Head Diameter: 8mm / 0.31-inch; Cutting Length: 40mm / 1.57-inch.. Coarse Grit Diamond: 46 grit; Great on stone, marble, glass.. Brazing Process: Serving life longer than conventional diamond coated rotary points.. Application: Suitable for use in grind the edge of glass, metal, woods, stone, marble, rock, jewelry, shells, tile, etc.. Using Advice: Use wet or dry; Water or other cooling agent is recommended..
