Hwy 108 Red Garage Flea Market near Canton, Georgia.
Update: Last I checked this one was no longer open. Just another piece of Flea Market history. Below is my review from 2011.
Just up the hill from the Vault Pawn and 108 Flea Market is the Red Garage Flea Market. A tiny market that specializes in old tools. They have other stuff also, but I have found more antique tools there than I have found at many other markets. On my last visit I found antique irons, a bracket bit brace and two Universal (A brand name that disappeared in 1965 when GE bought Landers, Frarry and Clark) sausage grinders.
They also have good used modern tools. Saws, hammers drills and many others. There were also about two dozen folding chairs for sale and a box of old 45 records. If you are traveling Highway 108 between Waleska and Ballground look for this flea market, it is worth the stop.