The approximate relationship between the diameter of screwdriver rod and the model specification:
The rod of 4mm~4.5mm is generally capable of cross Ph1, which can cover PH000, PH00, ph0, Ph1. This series basically belongs to the precision series, such as dismantling small electronic devices, glasses, watches, radios, recorders, etc.. Necessary! This is mainly set, in which ph000 is very small, not used a lot.
The rod of 6mm is used at cross Ph2 specification commonly, this is a specification that is most commonly used in medium screwdriver, so can buy alone, use at monitor, radio, TV and other shell fastening screw, transformer is fixed wait a moment, woodworking electricity is done furniture door screw is also a Ph2 head dozen the world.
8mm bar for Ph3,10mm bar for Ph4, basically mechanical equipment may be used, the possibility of electronic assembly is very small, except for electrical box controller...
So the combination scheme of phillips screwdriver configuration is roughly: precision screwdriver set below 4mm rod + an independent Ph2 screwdriver.