Diamond Machining Technology (DMT) Dia-Sharp 4-inch Diamond Sharpening Stone, Fine, (D4F)

I think this is a great product. The diamond surface is smooth is smooth, not bumpy. I own several different sharpening stones and different types. This is well made and ideal for touching up an edge or finishing it off depending on how much time you want to put into sharpening your knives and how sharp you want them. I believe this is 600 grit. Some people like to go to 1000 plus to finish the edge on their knife. However I find that this grit does well and if you know hat your doing you can get a really sharp edge. Shipping is always fast with amazon. I really enjoy buying the items i want with free super saving shipping.

Working perfectly , it is much better than my whetstone in sharpening .I also used it to sharpen my mothers small garden scissor besides my collection of knives + kitchen knives. I definitely recommend it.

I bought this sharpener to use in my KME Knife and Broadhead Sharpening System, and it works very well in that device. Metal does tend to build up in between the particles and requires washing. Oil is not needed.

After smoothing out a high spot, it works well. The high spot needed ground off, so it stopped dulling my blade.

perfect for sharpening a small hook knife for carving

Fits perfectly in the hand and my boyfriend will hardly part with this! He loves to use it over and over on any knife he can get his hands on!! Great product!

I use these "files" for knife sharpening and efficient removal of steel from various surfaces.This sharpener does all this fast and excellent.Using the various grades gives me an excellent finish surface to whatever I am working on!

Lives up to expectations. Great for the price