These are the thomson carbon road 318mm handlebars this is the modern bar for the modern road bike thomsons road bar features a mild wing shape on top clamping area wide enough for aero bars mid compact reach and drop their road bar wing section is small enough not to restrict hand movement when riding on the top and allows bar angle adjustment with out locking out your wrists shaping on the bottom side of the wing allows housing to be taped out of the way without the use of narrow h