DHD3.5 DHD340 DHD350 DHD360 DHD380 DHD1120 Length(less bit) 930mm 1030mm 1214mm 1248mm 1502mm 1880mm Weight (less bit) 25.0kg 39.0kg 76.5kg 100.0kg 290.0kg 474.0kg External diameter 82mm 99mm 125mm 142mm 225mm