Professional tool for commercial or occasional use Precision screwdriver and bit set Manufactured from chrome vanadium steel for strength and durability Ideal for mobile phone service and repair of any electrical devices Suitable for the repair and maintenance on electronic / electrical and mechanical equipment All the bits have hex shanks on the end so as well as being used with the screwdriver they can also be used with a drill either electric / battery / air This screwdriver comes with common bit sizes which can be stored easily in the case provided includes Torx, Star, Slotted, hex and security / tamper proof SET INCLUDES THE FOLLOWING - Phillips bits - PH00 / PH0 / PH1 and PH2 - Slotted / flat screwdriver bits - 1.5mm / 2mm / 2.5mm / 3mm / 3.5mm and 4mm - Torx bits - T4 / T5 / T6 / T7 / T8 / T10 / T15 and T20 - Metric hex bits - 1mm / 1.3mm / 1.5mm / 2mm / 2.5mm / 3mm / 3.5mm and 4mm - Tri-wing security bit - 3mm - Triangular security bit - 3mm - Round security bit - 1mm - Spanner security bits - 2.6mm - Star security bit - 2mm - 1 x screwdriver - total length 115mm (plastic coated with etches for comfort and grip when using this tool) Comes in a blow molded container for easy storage and transportation of the bits