BlueSpot Tools 6 Piece Screw Extractor Set for Damaged Screws and Bolts

The BlueSpot Screw Extraction Bits are manufactured from carbon steel and feature a reverse thread. They are used to remove broken/damaged screws and bolts. Simply insert into pre-drilled hole within screw and operate drill in reverse to remove screw without damage to hole. The square end also allows use with a tap wrench. Suitable for screws 3-25mm diameter.