Brand Name : BoosterDIY Supplies : WoodworkingType : Twist Drill Bitlength : as the pic showUse : Wood DrillingModel Number : Zhen201803-B265is_customized : YesMaterial : High Speed Steelscrew extractor set : Broken Screw ExtractorCategory : Plumbing toolsuse : screw removal toolsshape : step drill for steelproduct name : drill bit setname : brocas para metalproduct : furadeiraApplication : drill bits for metalfunction : Screw Extractortype : extractorRepair tool : bolt extractorFeatures:100% Brand new High qualityEasy to use, quick removal damaged screws, pipes, bolts and tack, four in six decapitated pipes triangle valveRemoves damaged screws that can not be removed with a standard screwdriver.Remove all kinds of broken or damaged head bolts, screws, and studs.High quality GCR15 quality tool steel forging from the overallConvenient and efficient, long service lifeBlack oxide finished for durabilityPackage Include:8 x Screw Extractors1 x Package BoxOther packages are packed according to the number of colors selectedHey, my friend:Size Approximately : these size is about Asian Size , you can decide your size by CA size . 1 inch= 2.54cmDifferent Monitor, the color may have difference, We guarantee the style is the same as shown in the pictures.And make sure you do not mind before ordering.