Features: Blind spot mirrors, will not affect the mirror reflection of the road, but also clearly see the existence of blind spots (horizontal or vertical views) of the security risks, improve driving safety. Specifications: 1.All compatible vehicles: Universal fit all cars 2.Material: Durable ABS plastic and glass 3.Size: 5.4*5.4 cm (Please check the size before purchase) 4.Designed by YASOKRO to increase visibility and improve driving safety How to install these mirrors? 1). Clean the surface : To install these blind spot mirrors, we need to clean the surface of both exterior side mirrors of the vehicle with alcohol pads or a cotton ball slightly; 2). adjust the position : When the surface of side mirror dries totally, calibrate the placement position where we want to put the blind spot mirrors on, before tearing the paper cover off from these blind mirrors; 3). rip off paper cover : from the adhesive; 4). stick spot mirrors : lightly mount one onto the exterior side mirror in the pre-determined position. Once properly positioned, apply moderate pressure on each total side mirror for approximately 20 seconds to securely attach. ATTENTION: 1.After installation, do not wash your car within 24 hours to avoid damage to the viscous. 2.This item do not fit for motorcycle. package listing: 1pair * Rear view mirror