【Special Design】: The surface is designed with wavy texture, which increases its friction, so that the handlebar will not move after installation. 【Application】: For fitting larger diameter stems to smaller handle bars, practical and stylish. 【Adapts】: 25.4 to 31.8mm / 31.8 to 35mm 【Color】: Black/Red SeonFook 1Pair Bike Handlebars Shim 25.4MM to 31.8MM Supplier or Manufacturer on Saipe 4pcs Aluminum Alloy Bicycle Handlebar Shim Adapter Bike Spacers Bicycle Handlebar Conversion Sheet Accessory For MTB, Road, Mountain, Fixed Gear Bike (25.4mm To 31.8mm MUQZI Bike Handlebar Shims. Easy Install: Very easy to install, just put the handlebar shim between the handlebar and the stem. [Sturdy Material]: Make of lightweight aluminum alloy, with CNC process, our bike handlebar shims are lightweight but durable About this item [Sturdy Material]: Make of lightweight aluminum alloy, with CNC process, our bike handlebar shims are lightweight but durable. [Special Design]: The surface is designed with wavy texture, which increases its friction, so that the handlebar will not move after installation