Extractor fingers fit into flutes of broken tap and a few turns of a tap wrench removes broken tap. Size: 5/16" (8mm).
5/16" 8mm Tap Extractor Walton 10314 4 Flute USA
Walton 10314 5/16" 8mm Tap Extractor 4 Flute USA , free ship USA
NEW Walton 10314 5/16" 4 Flute Tap Extractor Replacement Finger, 4 Pack (BN269)
NEW Walton 10314 5/16" 8 mm 4 Flute Tap Extractor Replacement Finger (BN269)
5/16" Dent Fix I-CAR Heavy Duty Steel Hole Punch Pliers Tool DF-516 - 8mm Holes
Walton Tools 10314 Tap Extractor - 5/16 Inch 4 Flute Hardened Steel 10314