... crushing machine 1.high quality tool steel, cutting-tool 2,using life is very long 3,easy operation 4, good price plastic crushing ... (USD/set )1,100 1,300 2,000 2,800 6,8003,0004,600Diameter of rotating blade (mm)240250280380400400500Rotating blade(pcs ... .57.51118.5221122Weight (kg)48065010001200150015002000Knife-edge model Trapezoidal knife plastic crushing machine