No damage to thread Small Mini EDM Machine broken tap extractor machine

No damage to thread Small Mini EDM Machine broken tap extractor machine SFX-4000B can fast remove broken taps, drill, drift, screw, plug gauge, etc., without damaging to the work piece, easily process on work pieces at any size, especially effective for large machine tools. Detail images Functions and Features 1.SFX-4000B abide by the principle of Electrolytic Corrosion to remove broken tools, no direct contact, no external force and damage to the work piece. 2. Portability: