short 8mm socket for fan clutch

[connerm]

1995 e300d 185,000. Fan spins like a bicycle wheel when I shut down and the engine is hot. Ordered the replacement Behr fan clutch and the tool to hold the pully. I do not know where to find the short 8mm socket suggested in another post. I checked Sears.com but didn't find it. That doesn't mean my local Sears doesn't carry it. Besides, my local Sears is 20 miles away. Anyone know where I can buy one online? Anyone want to sell me one? I'm going out of town tomorrow and won't be back until Monday. My plan is to get this done on Monday.