Norton sharpening stones are used to sharpen & hone a fine edge on scissors, knives, chisels, scrapers & blades. They are impregnated with a petroleum-based product allowing lubrication to suspend metal and abrasive particles away from the cutting surface. They feature a bonded abrasive composed of aluminium oxide & carbon carbide that are coarse-grained on one side and fine-grained on the other, catering all sharpening needs and providing faster cutting. Choose from a wide range of oilstones in 120 / 220 / 320 and 400 grit sizes on Raptor Supplies.