they make a few different kinds. some are for the impact driver, some are for a speed wrench or socket, and some are for an impact driver(usually used to get door hinges off). the difference is how they are constructed, the impact ones are solid one piece hardened steel, the others have socket with the screw driver end placed inside of it(kinda looks like an allen key) dont try to use the weaker type with the heavy stuff because the extra force will break them(i know from experience haha)
if you want me to get the numbers off mine ill go get em, but i need to know which ones you want.
hmm i just noticed you said 1/4 drive tho.... thats a little odd. do you mean 1/2 inch drive? for the 1/4 drive i usually use the 1/4" 6 point socket with the detachable allen type screw driver heads(they fit right inside the socket like a nut) but also, i do have a bluepoint(snap on) set that has 3 short screwdrivers, and a handle that they slide into for getting into tight spaces.