10 Pc. Bolt Biter Screw Extractor Set Compatible with fastener sizes ≤ 1/4” – 5/8” and M5-M16. Black oxide coating provides superior corrosion resistance. Tapered side and tip cutting edges for powerful and consistent extraction . High strength steel provides up to 50 times longer life . Extractor, Screw Extractor, Damaged, Rusted, Rounded, Easy Out, Speed Out, Bolt Out, Twist Out, Turbo Socket. Bi-directional design loosens or tightens damaged fasteners. High-visibility markings for easy size identification. Hex base design is compatible with hand and power tools. 5 sizes of left-hand drill bits included for extraction needs from start to finish. GEARCASE storage case is customizable and stackable to save space 84786