1 It's convenient to remove the broken taps,drills ,reamers, screws,plugs and other tools that are broken in the work-piece. 2 Has revert button, the machine can set the working course, when the electrode arrive at the setting position, it will alarm and the working head will return. 3 Split type design, working head can rotate in any direction. 4 Using magnetic base, the working head can be adsorbed on the machine, so it is convenient for clamping, making the cost to the minimum. 5 Install cooling fan, forced ventilation, ensure that the machine can work continuously. 6 Machine testing before selling 7 Processing at the side of larger work-piece. 8 Removing the taps on large work-piece. 9 Small size and light weight, portable for carrying 10 Mass production 11 pump power interface 12 professional logistics