NEW SUNNEN K16-NMG67 (280 grit) CBN HONING STONE. THIS IS A SPECIAL "G" BOND CBN HONING STONE. WHICH IS A LITTLE SOFTER AND MORE FRIABLE THAN THE STANDARD NM "A" BOND CBN HONING STONE. AND IS IDEALLY SUITED FOR HONING TITANIUM, INCONEL, AND OTHER MORE CHALLENGING & DIFFICULT MATERIALS TO HONE.
