Description: Titanium Coated Screw Extractor Set Removes any screw or bolt! (phillips, flat, hex, painted & more) Durable hardened steel construction Quick & easy to use Suitable for electric tools with chucks or fittings Specification: Material: HSS4241 steel Size: 1#?no.6+8)?2#(no.8+10)?3#(no.10+14), Saw drill: 8mm Package Includes: 4 Pieces of Screw Extractor Set