From Norton comes this 3-way Multi Oilstone Sharpening System: Black. 3-way Multi Oilstone Sharpening System: BlackThe Sharpening System is used by pouring the oil directly into the reservoir and turning the stone holding assembly so that the sharpening stone becomes submerged in oil. As you progress from grit to grit you will always have an oiled stoned ready to use. All are held in a sturdy non-skid case with cover. It also comes with a 4.5-oz container of Norton sharpening oil. Norton sharpeners have been used by professionals in the restaurant and meat industry for years and this simply sharpening system has proven time and time again to produce the best edges. The stones in this smaller version of the Norton Multi Oilstone Sharpening System are 8 x 2 x 3/8-in. thick. It includes a fine grit india stone along with a medium and coarse grit crystolon stone oil and also comes with complete instructions and sharpening guide wedge. Use the coarse grit stone to quickly sharpen dull knives and move up to the medium stone to produce an average sharp edge while finally the fine stone will polish that edge to razor sharpness.Norton's Oil Stones are manufactured using a proprietary process that impregnates them with a petroleum based product that allows the lubrication used during the sharpening process to stay on the stone's surface. As a result the metal from the object being sharpened and small pieces of abrasive that break off the stone become suspended in the lubricant. This prevents these materials from imbedding into the sharpening stone's surface keeping it free cutting and making it easy to keep its surface clean. Norton sharpening stones are made of the highest quality materials and are unequaled for long sharpening life maintenance of shape and smooth cut. To obtain best results always lubricate your stone with Norton's Sharpening Stone Oil.For over 175 years Norton has been satisfying sportsman farmers mechanics woodworkers and culinary experts with products designed to precision sharpen a wide variety of tools. Norton manufactures well over 6400 products providing technical solutions for a variety of sharpening needs. Today Norton provides sharpening products manufactured in specialty fused abrasive minerals bonded with ceramic bonds natural Novaculite (Arkansas) stone diamond plated technology as well as US manufactured Japanese type waterstones. Each technology has its unique place in the home of sportsmen chefs woodworkers farmers craftsman and industry. Our manufacturing facility at the foot of the White Mountains and our quarries in Little Rock Arkansas produce the finest sharpening products offered around the world.