Neiko 10070A Torx Bit Socket and External Torx Socket Set (35 Piece), Cr-V Steel DURABILITY: bits made of premium S2 alloy steel for superior hardness that reduce wear-outs and insure longevity TORQUE STRENGTH: high strength chrome vanadium steel sockets provide superior torque for greater turning power with mirror chrome finish for corrosion resistance PRECISION BITS: precisely and automatically machined bit tips to ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges ORGANIZED STORAGE: set includes a sturdy plastic organizing case for secure storage and easy carrying INCLUDES: 13-pc torx star bit sockets T8, T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, T55, T60; 12-pc tamper proof torx bit sockets T8, T9, T10, T15, T20, T25, T27, T30, T40, T45, T50, T55; 10-pc external torx sockets E4, E5, E6, E7, E8, E10, E12, E14, E16, E18