???

I have 1/4 square female to 1/4" hex female adapter. This fits on the 1/4" drive wrench and takes any sort of widely available 1/4" hex drive bits commonly used in power screwdrivers and drills including flat and phillips screwdrivers, allen, torx etc.

You can also simply use a 1/4" drive 1/4" hex socket with these bits.