ULTRA-SHARP Diamond Sharpening Stones are the best value we've ever seen in a diamond sharpener. We've sharpened with every diamond sharpening stone made and the Ultra Sharp performs better than any of them. The stones are made of micronized monocrystalline diamonds that are electroplated to the surface of metal plates which provides outstanding durability. This set includes two diamond sharpening stones plus the universal stone holder to keep the stones firmly in place while you are sharpening. These extremely fast honing 300, 600 and 1200 grit diamond stones will quickly sharpen anything with a cutting edge including high carbon, stainless, and ceramic knives! Whether you are a chef, sportsman, woodworker or knife enthusiast, Ultra Sharp diamond sharpening stones will quickly give you the results you need. You won't be disappointed! This set includes two single grit stones with a Universal Stone Holder included. It is offered in three grit combinations. You can choose either the 300/600, 300/1200 or 600/1200 grit set. Quickly Sharpens All Knives and Tools The Best Value We've Seen! - 2 stones included.8" x 3" - Extremely fast working diamond sharpening stonesQuickly sharpens all knives and tools (including ceramic knives)Universal Stone Holder includedYou will not be disappointed! Grit Comparison D38CF - 300 & 600 Grit Set 300 Grit - Re-profiling and repairing nicked or severely worn blades. 600 Grit (Fine) - An all-purpose grit that can be used to repair worn or damaged blades. The 600 grit also provides a finished edge for many day to day sharpening tasks. D38CE - 300 & 1200 Grit Set 300 Grit - Re-profiling and repairing nicked or severely worn blades. 1200 Grit (Extra-Fine) - Provides a razor sharp edge on all knives and tools. D38EF 600 & 1200 Grit Set 600 Grit (Fine) - An all-purpose grit that can be used to repair worn or damaged blades. The 600 grit also provides a finished edge for many day to day sharpening tasks. 1200 Grit (Extra-Fine) - Provides a razor sharp edge on all knives and tools. Fast Working Extremely fast working diamond stones will quickly sharpen anything with a cutting edge including high carbon, stainless, and ceramic knives! Exceptional Value Includes two diamond sharpening stones plus the universal stone holder to keep the stones firmly in place while you are sharpening. Unsurpassed Durability Made of monocrystalline diamonds electroplated to the surface of metal plates which ensures outstanding durability. Care and Use of Diamond Sharpening Stones Best Lubricant to use for Diamond Sharpening Stones The best lubricant to use for diamond sharpening stones is a product called Krud Kutter. While plain water, windex ect. will work, Krud Kutter is the best lubricant to use for diamond sharpening stones. It is very inexpensive and a quart bottle can be purchased at your local hardware store and a quart is going to last you a very, very long time. Also, using Krud Kutter for a lubricant makes cleaning your diamond stones very easy. To lubricate your stone spray enough Krud Kutter on the stone so that it puddles up. As you are sharpening there should be a good puddle in front of your blade as your are moving it back and forth. If the stone starts to dry out simply spray on a little more Krud Kutter and continue sharpening. The most common mistake people make when using diamond sharpening stones is not using enough lubricant. Keeping a good puddle on the stone prevents the metal shavings from clogging the stone which slows down the sharpening process. Also, If metal shavings from your blade get stuck in the nooks and crannies of the stone, those metal shavings will rust making it appear your stone has rusted. If it appears your diamond sharpening stone has rust, follow the instructions below under the heading How to Remove Rust From Diamond Sharpening Stones. It is a very simple procedure and takes only a minute or two. Diamond sharpening stones require the least maintenance of all stones but they do need to be cleaned periodically to maintain optimum performance. Below are some simple instructions on how to clean and remove rust from diamond sharpening stones. How to Clean Diamond Sharpening Stones To clean your diamond sharpening stones just spray on enough Krud Kutter on the stone so it puddles up. Then, use a nylon brush (like a brush used to clean your fingernails) and scrub the stone. You do not have to scrub real hard or apply a lot of pressure. Just use the brush to work the Krud Kutter down into the nooks and crannies of the stone. You can now rinse them off with warm water. We continue to gently scrub the stone while rinsing to ensure any metal shavings are thoroughly rinsed from the stone. Be sure to allow them to dry before putting them away. Breaking In a Diamond Sharpening Stone Breaking in your diamond sharpening stones is an important step and ensures your stones will provide you many years of service. Diamond sharpening stones are purposely saturated with diamonds in the manufacturing process. This is done to ensure the diamonds are distributed on the stones as densely as possible. Significant changes occur in the surface of the stones during the break-in as some of the excess diamonds are removed from the stone. There are two important points to remember when breaking in a diamond sharpening stone. 1) There should be a good puddle of lubricant on the stones at all times. 2) You should rinse the stone well after the first minute and every 2 minutes thereafter until the stone is broken in. Your diamond stone should be fairly well broken in after 5 minutes and very well broken in after 10 minutes using any of the two methods below. We recommend two methods of breaking in your diamond stone. 1. Sharpen as you normally would but use the largest, dullest knife you have. Just be sure to follow the instructions above, keep the stone well lubricated and rinse it often. 2. Flatten a water stone as you normally would. This is best done under running water as it is best to continually rinse the stone during this process. Important: Do not try to flatten the back of a chisel or plane blade with a brand new diamond stone. Diamond stones should be well broken in using one of the methods above prior to flattening chisels or plane blades. Diamond sharpening stones have greatly increased in popularity of the last decade. They sharpen fast, don't need to be flattened and outlast other stones. With a little care and periodic cleaning they will last the average user a lifetime. Care and Use of Diamond Sharpening Stones Best Lubricant to use for Diamond Sharpening Stones The best lubricant to use for diamond sharpening stones is a product called Krud Kutter. While plain water, windex ect. will work, Krud Kutter is the best lubricant to use for diamond sharpening stones. It is very inexpensive and a quart bottle can be purchased at your local hardware store and a quart is going to last you a very, very long time. Also, using Krud Kutter for a lubricant makes cleaning your diamond stones very easy. To lubricate your stone spray enough Krud Kutter on the stone so that it puddles up. As you are sharpening there should be a good puddle in front of your blade as your are moving it back and forth. If the stone starts to dry out simply spray on a little more Krud Kutter and continue sharpening. The most common mistake people make when using diamond sharpening stones is not using enough lubricant. Keeping a good puddle on the stone prevents the metal shavings from clogging the stone which slows down the sharpening process. Also, If metal shavings from your blade get stuck in the nooks and crannies of the stone, those metal shavings will rust making it appear your stone has rusted. If it appears your diamond sharpening stone has rust, follow the instructions below under the heading How to Remove Rust From Diamond Sharpening Stones. It is a very simple procedure and takes only a minute or two. Diamond sharpening stones require the least maintenance of all stones but they do need to be cleaned periodically to maintain optimum performance. Below are some simple instructions on how to clean and remove rust from diamond sharpening stones. How to Clean Diamond Sharpening Stones To clean your diamond sharpening stones just spray on enough Krud Kutter on the stone so it puddles up. Then, use a nylon brush (like a brush used to clean your fingernails) and scrub the stone. You do not have to scrub real hard or apply a lot of pressure. Just use the brush to work the Krud Kutter down into the nooks and crannies of the stone. You can now rinse them off with warm water. We continue to gently scrub the stone while rinsing to ensure any metal shavings are thoroughly rinsed from the stone. Be sure to allow them to dry before putting them away. Breaking In a Diamond Sharpening Stone Breaking in your diamond sharpening stones is an important step and ensures your stones will provide you many years of service. Diamond sharpening stones are purposely saturated with diamonds in the manufacturing process. This is done to ensure the diamonds are distributed on the stones as densely as possible. Significant changes occur in the surface of the stones during the break-in as some of the excess diamonds are removed from the stone. There are two important points to remember when breaking in a diamond sharpening stone. 1) There should be a good puddle of lubricant on the stones at all times. 2) You should rinse the stone well after the first minute and every 2 minutes thereafter until the stone is broken in. Your diamond stone should be fairly well broken in after 5 minutes and very well broken in after 10 minutes using any of the two methods below. We recommend two methods of breaking in your diamond stone. 1. Sharpen as you normally would but use the largest, dullest knife you have. Just be sure to follow the instructions above, keep the stone well lubricated and rinse it often. 2. Flatten a water stone as you normally would. This is best done under running water as it is best to continually rinse the stone during this process. Important: Do not try to flatten the back of a chisel or plane blade with a brand new diamond stone. Diamond stones should be well broken in using one of the methods above prior to flattening chisels or plane blades. Diamond sharpening stones have greatly increased in popularity of the last decade. They sharpen fast, don't need to be flattened and outlast other stones. With a little care and periodic cleaning they will last the average user a lifetime.