I replaced my Wiha System 4 blade system with this because the standard System 4 system has been discontinued and I could not get any more blades to replace my worn out blades. I didn't want to use the System 4 Driveloc because I find that it has a fair amount of wobble. One real advantage of this set is that it uses standard HIOS and Delvo type bits, and they fit very positively in the Wera handle. You can also use other HIOS and Delvo bits. The Wera bits are very good quality, and you can see that the hex bits in particular have a different shape that really engages the points in the hex screws to prevent stripping. The bits fit screw heads very positively, and there is a wide array of types that fit specialized screws like Microstix, Torx Plus, and Pentalobe screws. One thing that is not available with these that was available with System 4 was the micro sized hex, and smaller flat head sizes. This is probably because they can't be power driven reliably. I have replaced those parts of my System 4 set with dedicated Wera drivers. This also has greater reach than the Wiha System 4 micro bit system and can reach recessed screws much more easily. There are also no sliding problems where the bit slides into the handle slowly like with the Wiha System 4 blade system (which Driveloc fixed). Overall I would say this is a really excellent set and a nicer multi bit precision system for my needs than the Wiha System 4 bit or blade system.

This is exactly what I was hoping to find, a high quality percision tool set for all the important small jobs A very impressive professional grade micro-tool set.

I used these tools to work on my own Apple devices and they certainly did the job! They are of exceptional quality and durability!

If you are considering this set, don't look any further. This is the ULTIMATE screwdriver set. Best quality, awesome performance. They are expensive, but you get what you pay for... - - -

The size and build quality of the Wera tools feels so much more solid than my old Wiha esd 27 piece set - even though the set lasted me for almost 6yrs+. - Putting it aside, I do wish the Wera set come with an extension for the bits, or the bits were a little longer, but nonetheless, they're so awesome!