Master screw extractor set for commercial or occasional use Mixed set of multi spline extractors and spiral extractorsStud and screw extractor setSet also comes with anticlockwise imperial drills, as the drill heats up when being drilled into the material it causes the break up of the bits being drilled for easy removal Suitable for the removal of broken screws or bolts without damaging the hole threads internallySuitable for all types of cross / T star and Hexagonal internal screwsCan be used with a spanner / socket or even a tap holder on the end of each spiral extractorManufactured from hardened and heat treated steel for strength and durabilityDesigned to remove the broken studs, socket screws and fittingsSpiral flutes designed to embed themselves deeper into the metal as you turn the tool so that the fastener resistance increases the extractors grip increaseSET INCLUDES THE FOLLOWING16 x Anticlockwise Imperial HSS Drill Bits • 5/64”, 7/64”, 1/8”, 5/32”, 3/16”, 7/32”, 1/4", 9/32”, 19/64”, 5/16”, 11/32”, 3/8”, 13/32”, 7/16”, 15/32” and 1/2"13 x Multispline Extractors• 1/8”, 5/32”, 3/16”, 7/32”, 1/4", 9/32”, 5/16”, 11/32”, 3/8”, 13/32”, 7/16”, 15/32” and 1/2"5 x Spiral Extractors• 1, 2, 3 , 4, 5 and 6Comes in a blow molded case for easy storage and transportation