No.4 CARBON SCREW EXTRACTOR

Recommended for simple, low cost removal of broken screws, bolts etc, without damaging the threads of the component. Available in Extractor numbers 1-4.
No.1: Use drill size: 2.0mm (5/64").
No.2: Use drill size: 2.8mm (7/64").
No.3: Use drill size: 4.0mm (5/32").
No.4: Use drill size: 6.3mm (1/4").