Contents: 13mm flexihead ratchet ring spanner; socket adaptor: 13mm x 1/4"D. 20 x Low profile bits manufactured from 8660 steel: Hex: 3, 4, 5, 6 & 8mm; Star*: T10, T15, T20, T25, T30, T40, T45, T50 & more→T55; Spline: M4, M5, M6, M8, M10 & M12. 9 x Go Thru alldrive sockets, manufactured from Chrome Vanadium: 5, 6, 7, 8, 9, 10, 11, 12 & 13mm. Ultra low profile socket and bit height 21mm. All drive sockets fit metric, AF, star* & spline fixings.