6pcs Damaged Bolt Screw Extractor Easy Remove Broken Screw Extractors Set Removal Tool with Storage Box for Broken Pipe Studs EXTENSION: Magnetic bit holder with composition adjustable collar can help absorb the high torque of newer impact drivers. Quick-change bit holder solves that bit wasn't long enough to reach what you were trying to drill p> HIGH HARDNESS: The high quality screw extractor has undergone an overall secondary heat treatment and has a hardness of HRC62-63. It is durable and can be widely used in all drills EASY TO USE: In easy steps, only need a drill, choose a smaller extractor than the damaged screw, can easily remove the screw, please make sure to reverse the drill during this process APPLICABLE : The screw remover is compatible with all brands of power drills and screwdriver handle tools, suitable for all homeowners, carpenters, mechanics, artists, hobbyists, etc WIDE USE: High precision hole position, ideal damaged bolt and screw removal tools, suitable for most common drill bits and various sizes of screws or bolts, such as Allen bolts, machine screws, lag bolts, wood screws, hex bolts, sheet metal screws Number of pieces delivered: 6 Size: please refer to the picture lucky meet