10pcs Multi-Spline Screw Extractor Set. 【Work with any Drills】 -This Screw Extractor Drill Bit Set has 5 models,double-end design, suitable for any drillsand all the screw size or bolt (2mm-12mm). 【Strong and Durable】 -This 6 pieces Screw Extractor Kit Set made from High Quality 4341 speed Steel, Titanium coated, hardness 63-65 HRC with heat treated technology, which is more harder than most screw extractors in market, the hardness and the durability are better than others.
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