The Wiha slimBit electric bits have been been specially developed for electrical applications, individually tested as per the international IEC 60900 standard. Providing users with a tool to work safely on live parts up to 1,000 V AC. Wiha slimTECHNOLOGY means blades are up to 33% slimmer. This means low-lying screw and spring elements can be easily reached.slimBits can only be used with speedE, slimVario or TorqueVario-S electric tools. This 7 Piece Set contains the following: 6 x Hex slimBit electric Blades: 2.0 x 75mm, 2.5 x 75mm, 3.0 x 75mm, 4.0 x 75mm, 5.0 x 75mm& 6.0 x 75mm. 1 x slimBit box for easy storage of slimbits, whilst providing an optimum view of the screw profiles.