New Design Bicycle Universal Short Handlebar Stem MTB 31.8MM Aluminum Alloy Durable Cycle Handlebar.This Handlebar stem is made of aluminium alloy, anode grinding processing, which ensures that it is incredibly durable and strong.This handlebar stem is easy to install as you just have to connect up the front fork stem and four bolt bar clamps hold the bar securely in position.This Handlebar stem really makes the riding position much more comfortable and flexible.This handlebar diameter is appropriate with 31.8 mm, stem tube diameter 28.6 mm, length 45mm (center distance of the two holes).Bicycle Handlebar Stem MTB 31.8MM Aluminum Alloy Durable Cycle Handlebar.Stylish design, enhance the appearance of your bicycle.