Norton IM200 -8" Three Stone Sharpening System - Fine India, Medium Crystolon, and Coarse Crystolon stones Self-contained bench sharpening unit with reservoir for oil and rotating axis that holds three stones in place for sequential use Includes three sharpening stones: 100-grit silicon carbide stone for repairing, 150-grit silicon carbide for sharpening and maintaining, and 320-grit aluminum oxide for honing cutting edges 3/8 x 8 x 2 inch (H x W x D) size of oilstones makes them suitable for use as bench sharpeners for knives and tools Durable plastic case has a lid and no-slip rubber feet, and protects stones against breakage Angle guide to position tool correctly for sharpening, and 4.5 oz. can of Norton sharpening stone oil for lubrication