1.raw material: high-pure ultra-fine zirconia power 2.looks perfect and has sharp edge, enjoys a long working life 3.high hardness, strong anti-corrosion, stable chemical performance, good wear resistance 4.no magnetism,could not be detected by any metal detectors 5.no electricity transfer, easy to be cleaned and used 6.as for ceramic cutting tools,it is fragile ,and could not be used as the tommy bara