For all fine screw works in electronics and precision mechanics the metric hexagon screwdriver set is specifically designed to deal with small precise tasks the high quality precision screwdrivers sit comfortably in your hand allow fast screwing the heads are made of nickel chromium molybdenum steel with hardened tips and guarantee maximum precision the handles are made of polyamide with coloured rotatable heads contents hexagonal 07 09 13 15 20 25 mm screwdrivers head l