This stem can help to reduce the amount of tilting to do when Cycling a bicycles and gives better control over the ability to steer. Make of aluminum alloy materials, light in weight, Enduring and stable to use. Short Handlebar Stem Suitable for Most Road Bike, Fixed Gear Bicycles, Mountain Bikes. The 31.8mm Mountain bike stem can sharper feedbacks and increased stability. This help you have a better grasp of the bike's balances and postures, enhancing stability while Cycling.