Mr. Frank Kim, Koher's No.1 Sales Manager, contributed an technical article to the WB Werkstatt + Betrieb issue 07 / 2020. The article covers Koher's new low-content CBN grades for hardened steel, KB500 and KB650. You can find the superiority in toughness and heat-resistance of the new CBN grades and how KOHER communicate with our partners in the article. Please click the below image to see the full text. The article is offered in german.