Wolf Tooth Alloy Bar End Plugs - Raw SilverWolf Tooth Alloy Bar End Plugs Raw Silver. 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