Yamaha universal 8mm scooter atv mirrors reverse thread Size: 8 mm reverse thread Certification: E-MARK , DOT and SAE !! Shell: High grade ABS material with good weather ability and high toughness. Bracket: High rigidity Metal material with anti-rust coating. Quality Test: Durability test, Chemical resistance and Sudden impacts test. PACKAGE CONTENT:A Set of Left & Right side mirrors ( Both included )