(WALTON 10084 #8 4mm TAP EXTRACTOR 4 FLUTE. 3) APPLY A TAP WRENCH TO EXTRACTOR AND GENTLY TWIST FORWARD AND BACKWARD TO LOOSEN THEN BACK OUT THE BROKEN TAP. WALTON TOOLS. THE HARDENED STEEL FINGERS OF WALTON TAP EXTRACTORS FIT IN THE FLUTES OF A BROKEN TAP TO BACK IT OUT SIMPLY AND SAFELY.