... 56E,cut 90for wood of dia.300mm ,still can be used well after re-mill blade 2times and adjust length ... 56E,cut 90for wood of dia.300mm ,still can be used well after re-mill blade 3times and adjust ... ,72E,cut 90for wood of dia.300mm ,still can be used well after re-mill blade 2times and adjust length ... ,72E,cut 90for wood of dia.300mm ,still can be used well after re-mill blade 3times and adjust length ...