Add a flash of color to your handlebars. Alloy Bar End Plugs are precision engineered and machined using lightweight durable 6061-T6 aluminum. They are compatible with mountain and road bike handlebars thanks to an expanding wedge that makes a secure fit for most inner bar diameters. Available in a variety of anodized color options that match Wolf Tooth headsets stem caps seatpost clamps bolts and more. Works with mountain and road bike handlebars. The expanding wedge makes a secure fit for most handlebar diametersCompatible with handlebars measuring 18 mm to 21.5 mm inner diameterAlloy plug outer diameter: 26.6mmUse 3 mm hex tool (not included) to secure bar end plugs. Tighten until snug; do not overtighten TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Material 6061-T6 Aluminum Color Black Weight 17 Defined Color Black