1.used for drilling door 2.single head 3.including dust cover and blow dust pipe drilling machine(radial drilling machine,vertical drilling machine)single head hinge driller ,used for drill door ,include dust cover and blow dust pipe device DescriptionParameterSpeed of shaft rotation3450 R.P.MRange of work100 mmQuantity of drills3pcs/onceTotal motor power1HPappendix1 pc drill head (diameter:ΓΈ35mm ...