Made with High Quality Chrome Vanadium Steel * Mirror Polished and Chrome Plated finish * E sockets: 1/4" (E4, E5, E6, E7, E8). 3/8" (E10, E12, E14, E16). 1/2" dr (E18) * Tamperproof bit socket: 1/4" (T8, T9, T10, T15, T20, T25, T27, T30). 3/8" (T40, T45, T50, T55) * Star: 1/4" (T8, T10, T15, T20, T25, T27, T30). 3/8" (T40, T45, T47, T50, T55). 1/2" (T60)