dear sir madam,material: tungsten carb external turning toolhardness: differentcoating: pvd cvditem name: tungaloy toolstype: allgrade: variousmaterial: carb gold black graycoating: yesworkpiece: steel, stainless steel, cast ironcertificate: iso9001: 2008 tungaloy cnc tungsten carbtstungaloy inserts: tungaloy insertstungaloy carbts: tungaloy carbts