Pair of Shimano 600 Tricolor ST-6400 8-speed brifters. Used but in good working order. 23.8-24.2 bar clamp. 
Some minor scuff marks and signs of use, please see images. 
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Please just ask any questions, and check my other auctions for more Tricolor parts - I'll be listing more-or-less a full groupset over coming days.