Features: 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 offer sharper feedback and increased stability. This help you have a better grasp of the bike's balance and postures, enhancing stability while Cycling. Specifications: Materials: Aluminum Alloy Color: Silver Black/Silver 1/Black Silver/Black 1 Front Fork Installation Diameter: about 28.6mm/1.13inch Handlebar Installation Diameter: about 31.8mm/1.25inch Package Includes: 1pc Mountain Bike Stem note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.