Product Description Chuangzhi provides shafts with ceramic coatings. Processing Technology: Thermal Spray, Plasma Spray Material of Coating: Al2O3, Cr2O3 Hardness: HV 750--1300 Coating Thickness: 0.15mm—0.25mm Roughness: Ra 0.2--0.4 Other Attributes: Non-toxic and Corrosion Proof The ceramic coating of the shafts can bear severe wear even in condition of high temperature and high pressure.