Wolf Tooth Alloy Bar End Plugs Precision Engineered If you have bar-end plugs on your bike, chances are you've experienced losing one. The best way to keep your bar end plugs in your bars is to use an expanding plug. The Wolf Tooth Alloy Bar End Plugs are compatible with mountain and road bike handlebars thanks to an expanding wedge that makes a secure fit for most inner bar diameters. It uses a 3mm hex tool to secure the plug. Features Expanding wedge secures the plug in place Compatible with handlebars from 18mm to 21. 5mm inner diameter Weight: 17g for a set of two | Wolf Tooth Components | Alloy Bar End Plugs Gold | Aluminum