Slim Square Blind Spot Mirror, Ampper HD Glass Frameless Convex Rear View Mirror, Pack of 2 Pls clean your original car side mirror with alcohol or some other cleaning products. Press down HARD when the mirror is stick to the black pivot base, it is more firmly stick and will not fall off from the pivot base. 2 piece square packaged, newest upgrade 360 degree rotate + 20 degree sway adjustable, maximize your view with wide angle in car. All convex spot mirrors are equipped with tiny adjustable swivel mounting bracket for easy installation. 2.52" X 1.81" HD Glass curved male face frameless ultrathin slim design, equip with 3M adhesive for pressure-sensitive tape installation. Rust resistant and the glass will not haze, suitable for interior or exterior use. Flexible convex shape of blind spot mirror helps you to forecast the next surroundings when passing or changing lanes. Install and test within seconds, all universal vehicles car fit accessory, MUST have for every truck, car, SUV, RVs and vans. PLS NOTE: this item do not fit for motorcycle.