Portable EDM broken tap remover machine. 
A.Could remove broken tap sized M2-M20
B.Small size, light weight, convenient to operate, especially on large size work piece;
C.Electrolytic Corrosion principle, no damage to workpieces;
D.Magnetic base, easily to attract on the workpiece;
E.Vibration motor improved the efficiency to two or three times;
F.Work head is separated, helpful for complex machining;
G.Alarm automatically for certain depth;