5 - Screw tapered extractors A comprehensive 17PC extractor set for removing screws, studs & nuts. 4 - Stud Sockets: 6mm, 8mm, 10mm and 12mm. 8 - Jagged profile non slip sockets for loosening rounded of hexagon nuts: 9, 10, 11, 12, 13, 14, 16 and 19mm.
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