Ideal Stem for Rider: Can't get comfortable on your bike? Tried too many bike stems? This adjustable stems are a useful way of tweaking your handlebar height and reach, particularly for touring where you spend long hours in the saddle. Our adjustable stem is the best bet to get comfortableCompatibility: Only Fit for Handlebar diameter 31.8mm (1-1/4''), front fork stem diameter 28.6mm (1-1/8") and is available in a range of lengths 90, 110 and 145mm. PLEASE CONFIRM YOUR SIZE BEFORE YOUR PURCHASEMaterial: The MTB stem is manufactured with a 3D Forged alloy construction that gives strength and control. The durability of this stem is very adjustable with an angle of (-70to +70)Easy to Install: Just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position