... and durable 3 OEM is welcome 4 Sample supply Disposable ESU Pencil/ Electrosurgical Pencil Function: Cut and Coagulation Electrode Material: Replaceable Stainless ... Cable Length : 3M, (Or 2.5M, 5M, Selectable)Ball electrode, Hand control, suitable for brain surgery, nervous surgery Electrosurgical Pencil,Disposable electrosurgical pencil