1 ò DW38/DW38NC less than 38 2 ò DW50/DW50NC less than 50.8 3 ò DW63/DW63NC less than63.5 4 ò DW75/DW75NC less than 76.2 5 ò DW80/DW80NC less than 88.9 6 ò DW115/DW115N Cless than 115 Main characteristics: Uses the PLC programmable controller Two times settable of pipe-bending angle High stability without contact Low failure rate and maintains easily High economics and efficiency. Recommend profession fit for : Automobile fitting(brake tubes, bumpers , silencers ,chairs and so on).Motorcycle manufacture, healthy equipment, air conditioning, bicycle industry, steel furniture, bath equipment and so on.