These shimano claris r240 triple 8 speed flat bar road levers are a mtb style sti shifters offer fast and accurate gear changes at the touch of a lever for road bike performance with flat handlebars with 2 way release allows the upper shift lever to performs the same shift function but swings in either direction allowing it to be released by the thumb or index finger shimano have made them adjustable to work with v brakes caliper brakes cantilever brakes and cable disc brakes