Phillips screwdriver from small to the largest ships have 7 Specifications
ph000 ph00 ph0 ph1 ph2 ph3 ph4

Screwdriver rod diameter approximately relations and specifications:

4mm ~ 4.5mm rod generally do cross Ph1, can cover ph000 ph00 ph0 ph1

This series is basically a series of precise, removable small electronic devices, eyewear, watches, radios, tape recorders and the like .. necessary! In this package based, which ph000 very small, with not a lot

6mm rod for cross Ph2 general specifications, this is the most commonly used medium-sized screwdriver in a specification, so you can buy one separately, for monitors, radios, televisions and other shell fastening screws, transformers, etc. fixed, electrical carpentry batch home furniture is a Ph2 screw head to conquer the world.

Rod 8mm for Ph3, lever 10mm for Ph4, basically it is possible to use mechanical equipment, with little possibility of electronic assembly, unless it is to do the electrical box controller ...

So Phillips screwdriver combination regimen configuration is roughly: