... length 4times(total 4.2mm).3/8.050,56E,cut 90for wood of dia.300mm ,still can be used well ... length 4times(total 5.6mm).3/8.050,56E,cut 90for wood of dia.300mm ,will be changed 3 drive links ... adjust length 3times(total 4.7mm)..325 .058,72E,cut 90for wood of dia.300mm ,still can be used well after ... adjust length 4times(total 5.5mm)..325 .058,72E,cut 90for wood of dia.300mm ,will be changed 4 drive links ...