Stripped or Damaged Screw / Bolt Remover Set by By Electronix ExpressCategory: Damaged FastenerHihg quality products and best service. Removing stubborn rusted and/or stripped screws and bolts is easy with this 4 piece drill bit set by . Using any 3/8" drill set in reverse, only two steps are required to remove screws and bolts; use the burnishing end of the bit to burnish a hole in the problematic screw or bolt, then flip the bit and use the extract end to remove. Bit #1 is suitable for screw sizes No. 4 through 7 and No. 10 (5mm) bolts, Bit #2 for screw sizes No. 8 through 10 and 1/4" (6mm) bolts, Bit #3 for screw sizes No. 11 through 14 and 5/16" (8mm) bolts, and Bit #4 for screw sizes No. 16 through 24 and 3/8" (10mm) bolts. Bits can be used with most screw types including Hex, Torx, Phillips, and Square Drive. Not recommended for drywall screws. Full instructions: 1. Burnishing: a. Ensure that the work piece is secure and will not move during the use of this tool b. Insert bit directly into drill or quick change chuck so that the burnishing end is visible. c. Change drill direction to reverse d. Place burnishing end of the bit onto the center of the damaged screw/bolt, activate the drill and apply pressure toward the screw/bolt. Stop when a 1/16" deep area has been burnished in the center 2. a. Flip the bit b. Place extractor end of the bit into the center of the screw/bolt c. With the drill still set to reverse, apply low power to the drill while applying downward pressure - the extractor side of the tool with thread into the screw/bolt head. Maintenance: Clean debris off of the bit and use oil to lubricate after each use. is a trademarked brand. We are a U.S. based company with a warehouse and offices located in NJ. We perform quality control procedures on all of our products to ensure our customer is getting a quality product backed by our 30-day guarantee. If you are not buying from or Walmart directly, you are purchasing a counterfeit and lower quality product. Feel free to contact us if you need further information or have any question, we will be more than happy to assist you.