Here`s all there is to it... 3 Simple Steps for removing broken taps the easy way
- Thoroughly remove all chips of the broken tap. Insert the extractor fingers into the flutes of the broken tap, pushing them gently but firmly into position.
- Push the holder down until it touches the broken tap. Slide the sleeve down until it touches the work. (Both are important.)
- Apply a tap wrench to the square end of the holder. Twist forward and backward a few times to loosen, then back out the broken tap.
For machine screw and hand taps.Walton Tools 10254 6mm (1/4 In) 4 Flute Tap Extractor 
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