A small screwdriver handle for C4 size screwdriver bits (~3.9mm hex)

Commonly used with small Wiha, Xiaomi, and other screwdriver sets.

- C4-sized bits will fit snuggly in the holder, allowing for bits to be used with hard-to-access screws.
- It is also perfect for reaching small screws in deep, small diameter pockets (example shown in photos)

The back of the handle also features a 5mm hex. A 5 mm Allen key can be used to extend or gain more leverage.
In my testing, the screwdriver survived tightening and loosening many delta-pt Phillips screws.

Note: Since the shaft is relatively small in diameter, too high of tightening or loosening torques may result in failure.