Bolt Extractor Kit, 16-Piece Stripped Bolt Remover Socket Set with 3/8″ Drive Impact Adapter & Knock-Out Pin and Gloves, Heavy Duty Bolt Extractor for Rounded, Rusted, Broken Nuts & Screws. Heat-treated and sandblasted with a gray oxide finish for superior strength, corrosion resistance, and long-lasting durability under high-torque, heavy-duty use.