Norton-Saint Gobain Abrasives 89507 Japanese-Type 4000 Grit Waterstone for Fast Sharpening and Ultra Fine Finishes, Silicon Carbide/Aluminum Oxide Abrasives, 8"L x 3"W x 1"H, Blue Plastic Hinged Box

• Protect your investment in quality knives with this 4000 grit knife sharpening stone, great for maintaining and refining razor sharp cutting edges
• This waterstone, also known as a whetstone, can be used to create an abrasive slurry - a timeless and unsurpassed knife sharpening method
• Using water as lubricant instead of oil, this whetstone is easy to clean and actually requires less force to sharpen than an oil stone
• This tool and knife sharpening whetstone is 1 x 8 x 3 inch size (H x W x D), is great for use as a bench stone for kitchen knives, a utility knife, tools and more
• Includes a sharpening stone whetstone holder and case with rubber feet that allows easy and safe stabilization when sharpening

The NORTON IM9 India fine-grit replacement oilstone for the IM313 sharpening system is made of 320-grit aluminum oxide, suitable for sharpening and maintaining steel cutting edges; it produces durable, smooth-cutting edges and is preferred for close tolerances. The stone is prefilled with oil to save time and eliminate the need to presoak it prior to use. The oil prevents metal from bonding with the abrasive surface by flushing away dislodged abrasive and metal chips. This oilstone is commonly used to replace a stone in the Norton IM313 sharpening system, or as a bench stone, to restore cutting edges on straight-edged tools such as chisels, knives, plane blades, and precision instruments.