Norton Saint Gobain 150X6X31.75MM 38A80LVS Plain Grinding Wheel Tool and cutter grinding on ferrous and metals. friable abrasive for maximum coolness of cut on very heat-sensitive tool steels. For light to medium cut rates. "PB" = Supplied with Plastic Bushes. Abrasive Type 38A - High purity white aluminium oxide abrasive GBP 27.99 1