The Wolf Tooth Pogie Bar End Plugs are bar plug attachments built for their Singletrack Pogies. This 1/4 turn locking attachment makes installing and moving Pogies convenient and easy. No screws, no velcro, no hassle - just click them in and ride. The Wolf Tooth Pogie Bar End Plugs are sold as a stand alone product because some customers may want an extra to move the Pogies around, say from a commuter bike to their mountain bike. Or they may have existing Pogies or hand covers that need a more convenient attachment solution. Wolf Tooth Pogie Bar End Plugs Compatibility Most flat bars on the market. Inner diameter of the handlebar should be between 17.4mm and 20mm. Designed for use with the Wolf Tooth Singletrack Pogies Will work with some other hand covers, bar mitts or Pogies Wolf Tooth Pogie Bar End Plugs Specifications Note that Wolf Tooth's Pogies come with one pair of these bar plugs Expanding mandrel bar plug and 1/4 turn locking attachment Designed and manufactured in the USA, patent pending Material - Unique polymer blend resistant to impact at extreme low temperatures Weight - 28g per pair