Description:12pc Screw Extractor and Drill Bit Guide Set Broken Bolt Fastener RemoverSpecification:          Material       GCr15 bearing steel           Size of Screw extractor(6pcs)        3-6、 6-8、 8-11、 11-14、 14-18 and 18-25           Size of  Drills(6pcs)       3\/32、 1\/8、 3\/16、 1\/4、 5\/16、 3\/8!#!amp!*!rdquo;           Size of box       19x10x4.5cm        Features:Produced from GCr15 bearing steel.Made from HSS 4241 and black oxide coated.Durable and long service life.Package Included:6 X Screw extractor6 X DrillsMore Details: