Material: The material of this product is high speed steel, and its service life is good. Screws for taking iron products are no problem. Stainless steel screws are also available. Scope of application: iron screws, steel screws, wood screws and stainless steel screws are common features Function: Quick and easy removal of damaged screws, pipes, bolts and nails. It is easy to use. Drill a hole in the specified screw and unscrew it using a puller to remove it effortlessly. It must be used with a hand drill, the whole process requires reverse operation, first open a hole and then remove it, the success rate of the removal is high. Product Name: Broken Screw Extracto Note: The product is packed in a box, so the product is sold in box form.Use instructions: 1.Use with an electric drill that turns in the opposite direction. . Make sure the part machine is safe and will not be displaced when using the extractor. 3.Select a screw extractor that is thinner than the damaged screw head. the drill head. 4. Reverse the screw extractor and turn it in the screw in the counterclockwise until the damaged screw is free.