Premium Material: Our screw extractor tool is made of high speed steel, with high hardness, high wear resistance and high heat resistance, is a good helper for removing screws. broken screws. Complete set: set of 10 drill bit tools, 5 screw extractors of different sizes (sizes EX-1, EX-2, EX-3, EX-4, EX-5) and 5 different sizes left hand drill bits (sizes 5/64", 7/64", 5/32", 1/4", 19/64" 6cm), meet your working needs. < p>Professional tools: This drill bit set has unique spiral flutes, increasing the strength and rigidity of the tool, drill a hole with a drill, then use the extractor to remove the broken screw, relieve a lot of your stress . Compact size: Our industrial tools have small size and lightweight design, easy to operate and use. With a specific elegant black metal box, they can be easily and neatly put into the box, easy to carry. Wide uses: suitable for manual drilling rigs, electric hand-held drilling rigs, drilling and milling machines. For Allen bolts, hex bolts, machine screws, wood screws, lag bolts, sheet metal screws and other screws.