... Molybdenum plated(Moly-inlaid) ,6 Nitrided ,7 Oxidized ,8 Nano ,9 Zirconium-plating ,10 Sandblasted ,11 Special honing, 12 Titanium-plating ... mm8)Product Characteristics: Germany and Japanese advanced technology , Wear proof , High temperature resistant . 9)For European& American model, Japanese& Korean model, Russian ...