Shimano sora 3500 flat bar 9 speed shifter setshimano sl 3500 sora 9 speed flat bar shifters featuresflat bar mounted rapid fire shiftercompatible with standard 9 speed front derailleur2 way release allows both levers to be operated with the thumb by pressing or the upper lever to be operated with the forefinger by pullingweight approx 300ga 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products buyshimano componentsfrom chain