PHILODO 31.8 Bike Stem Adjustable 0-60 Degree Bicycle Stem Handlebar Riser Extender for Road Bike, Mountain Bike (Only Fit 1.25"/31.8mm Handlebar) - BS-31-130

• ★This Stem is suitable for PHILODO Ebike H7&P7, if other ebikes, please confirm your bike fork diameter is 28.6mm (1-1/8") and the handlebar diameter is 31.8mm (1-1/4") before order!!! ★ The bike stem is sturdy, well designed and easily adjusted, which is preferable to removing the handlebar stem and exchanging it for one with a different angle.There are three length for choose, 90mm, 110mm and 130mm. Which length is more suitable for you depends on the length of your arms and what position you find comfortable. ★ The installation is easy because the specs were accurately represented. There is a "degree of angle" indicator on the adjacent parts to allow you to set your angel correctly. The stem has a opening that allows you to see where the handle bar is positioned. ★ This is a pretty nice riser, good adjust-ability. Depending on the thickness of your handlebar, you may need to install a shim. Be sure to use glue on threads if any loosen up. ★ Use the adjustable stem to achieve a more comfortable riding position, the pain caused by the original setup in shoulders/arms/back had to be corrected. This stem and a riser handlebar did the trick, allow you to sit more upright on bike which is better for your back.