Astro 1038 2-in-1 Internal Torx and External Metric Hex Bit Set, 6-Piece Dual function Internal Torx and External Hex Bit Set Slide sleeve to switch from Internal to External function S2 steel provides strength and durability External Hex: 5, 6, 7, 8, 9, 10 Internal Torx: T20, T25, T30, T40, T45, T50