Mechanic at work grabbed this, "check this thing out, had it for like 15 years now, no idea what it's actually called." Friend doesn't know either, now I come to the real experts
What about it?
He was replacing a switch in a tight area, grabbed this instead of trying to wedge a small screwdriver in, the handle spins and turns the bit, can also pull the handle off and insert it in a drill. SD90A is a possible part # from the handle.