1/4" Broken Bolt Removal Stud Extractor Remover Set 2.5mm 3mm 3.5mm 4mm - 4pc 1/4in.Dr Stud Extractor Set Sizes : 2.5, 3, 3.5, 4mm Hex End allows use with 12mm Spanner For removing damaged or deformed screw and nuts.;
eBay