Sizes: T15, T20, T25, T27, T30, T40, T45, T50, T55 x 67mm long x 3/8"D. Manufactured to IEC60900 standards, for safe operator use on live voltages up to 1000V AC / 1500V DC. Sockets manufactured from chrome vanadium (50BV30), bits manufactured from S2 steel. Presented in an EVA foam tray (36 x 185 x 185mm) convenient for user storage and limiting packaging waste. Suitable for use with the Laser Tools fully insulated 3/8"D ratchet (Part No. 8414) and fully insulated click type torque wrench (Part No. 8321).