Reflector , Reflex Reflector , Cat Eyes 1. DOT SAE , E-Mark , CCC certified; 2. Diameter : 55mm. Reflector , Reflex Reflector , Cat Eyes for truck, motorcycle or pedestrian.1. DOT SAE , E-Mark , CCC, CE. EN13356 certified.2. Installed with adhesive sticker or bolt, or hang on by keychain.3. Popular in Japan, Europe, American...