Square, tubular stem that reduces drag and increases strength. ITEM: RAS-88 The unique square tubular stem body adds an aerodynamic edge to your riding, as well as giving your bike a contemporary aesthetic. That aero appeal continues with the 6061 aluminum stem caps: its low-profile design contributes to the wind-cheating performance. 6061 aluminum strikes a good balance between stiffness and comfort. 5° stem can be flipped for further aerodynamics or sit-up comfort. 10mm stem spacer contributes a smooth transition from the stem to the headset cover. Comes in six sizes – 80, 90, 100, 110, 120, 130, 140mm – for more comfort and better handling whatever your size and style of riding. Weighs just 138g. Made For:Road racing, track racing, sportive riding and cyclocross Material:6061 aluminum Bolts:SCM-435 steel Rise:+/-5° Length:120/130/140mm Clamp Diameter:31.8mm Weight:138g (90mm option) Color:Red/Gray