Hooke Road Auto Car 300mm Wide Convex Curve Interior Clip on Rear View Mirror Extender Clip on to any original rear view mirror, just one-touch and add-on to the stock rearview mirror of your car 300mm Curve Convex wide size helps minimize your blind spot increase your safety and deliver a wider range of view Robber clamps clips helps prevent vibrations and damage made onto your stock mirror We use first class mirrors no dazzing,no double reflectins.Therefore you can have a clear scene from the mirror We make a special hook for easier installing