This Teng Tools set is an ideal solution for removing broken screws, pipes, bolts and studs. The 11-piece set contains 5 screw extractors, 4 bolt extractors and 2 nut splitters, which are supplied in a handy storage tray. The TTSN11 Stud and Nut Remover Set contains the following 5 x Screw extractors 7/64, 9/64, 5/32, 1/4 and 19/64in. 4 x Stud 1/2in Drive extractors 6, 8, 10 and 12mm. 2 x Nut splitters 5-20mm capacity and 14-27mm capacity.