Semi-friable grindstone suited to the grinding of fine edged hand tools where the risk of overheating needs to be avoided. They are more resistant to grooving when reshaping or heavy sharpening is required than the white aluminium oxide stones. Available in 150mm diameter 31.75mm(1.1/4") bore, 80 grit and two widths, 20mm or 25mm.
|Bore Size||31.75 mm (1.1/4")|
|Wheel Diameter||150 mm|