Went to put front pads on my hooptie last night (88 Olds Cutlass Ciera - a true classic), and found that those B#$tards at GM decided to use a star-head bolt instead of the allen-head bolt that they had used for probably 20+ years. I'm sure they didn't do this to try to get Joe-Backyard-Mechanic to bring his car into the dealership for an $80 brake job, right?

Can anyone tell me what size socket these things are? I'm going to try to run out at lunch to get one, and it would help me out if I knew what size and whether it is standard or metric. Anyone out there who is a mechanic by trade and remembers off hand what size these are?

Thanks a bunch!