Wolf Tooth Components Alloy Bar End Plugs Description: The Wolf Tooth Components Alloy Bar End Plugs are bringing style to bikes and are compatible with MTB and Road bars. Utilizing an expandable wedge allows these bar ends to be compatible with inner bar diameters of 16mm through 21.5mm. Add some color to your bike with the Wolf Tooth Alloy Bar End Plugs. Note: A 3mm hex tool is needed to install these. Do not overtighten; tighten only until snug. Specifications: Cap Diameter 26.6mm Compatible Handlebar Inner Diameter: 16-21.5mm Color: Black Weight (Pair): 17g