... 1.It is uniqueness,have two gear transmission system each mirror,can 360 degree rotate,all direction. 2.Have a ... .It is uniqueness,have two gear transmission system each mirror,can 360 degree rotate,all direction.2.Have a ... specialy creative spring,let it more easy mount bicycle and off.3.More widely fit most bicycle, ... friendly materials.can pass SGS testing report, HANDLEBAR MIRROR