Stelo 7/17/35 gradi MTB bici strada 28,6/31,8 mm 60/70/80/90/100/110/120/130 mm
UNO Black Stem Kalloy Ultralight 7/17/35 Degree MTB Bike Stem for Fork 28.6 31.8mm 60/70/80/90/100/110/120/130mm bicycle king alloy. The most commonly used stem is 7 degree 80mm and 90mm, if you donot know how to choose, just buy them.