PREMIUM QUALITY - Handlebar mirror mounting clamps are made of high quality aluminum, black powder coated, durable FUNCTION-- Dimension: 10mm mounting thread for any 10mm custom mirror ; Help you fix your mounted motorcycle rear view mirror UNIVERSIAL FITMENT-- Handlebar mounting clamps for 10mm handlebars are universal DESIGNED FOR - The 28mm motorcycle rear view mirror mount can fix directly to standard 7/8" 10mm handlebar, easy to install GOOD PACKAGE - The motorcycle rear view mirror clamp package included: 1 sets (left and right) Black finish Clamp on adapter of mirror