5pcs Damaged Screw Remover Set - Extractor Set by Hitecera - Easily Remove Stripped or Damaged Screws - Set of 5 Stripped Screw Removers 5pcs Screw Remover HSS Broken Rusted Stripped Screw and Bolt Remover Extractor Materials: High Speed Steel4241(HSS4241) Surface treatment: Nickel plating Screw: 0#, 1#, 2#, 3#, 4# Handle: Hexagonal shank 1/4''(6.35MM)