This mountain bike (MTB) stem is specifically designed for the rigours of modern trail riding and all mountain exploring. It comes equipped with a hard-wearing 6061 alloy build to ensure a strong and secure connection between your handlebar and your fork's steerer tube. Suitable for use on handlebars with a 31.8mm bar clamp diameter and forks with a 1 1/8" steerer diameter, this is a great choice of upgrade for holding your steering set-up together as you conquer your way around the mountain. Manufacturer's Part Numbers: 91360060002 Black/White 110mm 7 Degrees 91360060004 Black/White 80mm 12 Degrees 91360060006 Black/White 110mm 12 Degrees