1)Crusher-SWP360 2)long service life 3)Easy ... use, long service life.Stair type cutting design for knives base, for decomposition of cutting forces, resulting in cutting force ... doubled. Knives base from high quality material T7A for tool steel, rigid-flexible and reasonable, not easy ... error of less than 0.05mm, have set benchmarks for each hole components, surface rough, refined two water ...