YES! In fact, almost half of the included bits are for #2 Phillips head screws. Only one is for a #3 head. This is can be important if you are using an impact driver which creates much more torque than an electric drill. You generally find #2 heads on #6, #7, #8, and some #9 screws. #10 and above screws typically use the #3 head. If the screw you are using is made out of a softer metal (like stainless steel), an impact driver can break the screw quite easily, particularly if you are trying to drive it into a very hardwood such as maple.
I believe so. The biggest socket removed a 13mm.
If you're not happy with DeWalt perhaps you should try a different brand. After checking a few different manufacturers, I didn't any of them that described the different bit sizes in their 30(+) kits.
Yes. I used the the biggest soccket for a 13mm and it worked for me.
Yes. They do destroy the bolt so get a proper replacement.
Yes, if you can get enough grip on the head of the bolt, use a slow twist to start removal.
Absolutely. That's why I bought them. I've used them with multiple different sizes of screws without any problems.
yes I used the 3/8 on a 10mm that was rounded off and the socket removed the bolt
Yes, a regular drill will work remove with slow torque...
The total length of the bit guide is 3-5/8", when inserted in the driver it sticks out 3-1/16". The extended bits are 2-1/4" long and will add to the length of the guide. You can put the longer bits directly in the chuck or use the extender/bit guide for added length.