CNC Machined form high quality material, which is not only but also solid. It is very easy and convenient to install, its installation just costs you a little time and energy. Perfect fit,no modification is needed, no install instructions included Built to greatly quality control standards, therefore it has a stable performance and excellent quality. Mirror risers / extenders will greatly improve your rear view vision by re-positioning your mirrors so you can see clearly past your shoulders. Condition: Fit for: Universal Motorcycles Product name: Motorcycle Mirror Risers/Extenders Weight: 200g Size: 6 x 1.5cm / 2.4 x 0.6inch Placement on vehicle: Front, Left & Right Appliance screw diameter: 10mm / M10 colour:Silver Material:aluminum Package Contents: 2 x Motorcycle Mirror Risers/Extenders 4 x screws 4 x spacer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.