Check the listing for details. EZE-LAP DIAMOND SHARPENER 6" STICK FILE MEDIUM 400 GRIT FROM CHRONOS 11M DEAL. Condition: New, Made in United States. Listed at 16.56 USD. EZE-LAP feel that 98% of all sharpening can be performed by the fine (600) grit diamond. This fine grit diamond has the abrasive ability to effectively sharpen a dull knife in less than a minute and bring the edge to keen razor finish. The fine grit is offered on all EZE-LAP diamond products. Round sharpeners are available in the fine grit only. oval sharpeners. We also have a complete line of diamond lapping compounds and slurries. Diamond powders available in Dupont Mypolex, monocrystalline, and natural origins, in sizes from 1/10 micron and up. We have been supplying Engineering tools Mail Order for 30 Years , a family business , we started from a small converted garage in St Albans and have grown steadily over the years and are now operating from our new 10,000 square foot warehouse.