Features:- Installed on the helmet, rotatable- First choice for bike enthusiasts- With velcro, you can adjust the angle of the mirrorMirror size: about 45mm x 30mm(approx)Length: about 22cm(approx)Rod material: aluminumColor:BlackSteps:- Stick the sticker on the back of the Velcro on the left side of the tape- Stick the Velcro on the rearview mirror- Unscrew the screw to adjust the length of the mirror rod- Rotate to adjust the mirror angle- FinishedPackage Weight : 59 G / 2.08 OuncesPackage Dimensions (L*W*H) : 240*20*20 MM / 9.45*0.79*0.79 InchesRetail Packaging: Yes, General BoxPackage Include:1 x Motorcycle Rearview Mirror