These blind spot mirrors should give you the superior sight you need while any object is in your blindspot while driving. These little wide mirrors are 360 degree rotatable and HD glass. As long as you prepare the area for them to be applied as stated, they should provide good long durability. It does come as a two pack, so there is no need to purchase more than one unless you are buying pairs for different reasons. They are very easy to clean and provide excellent vision. I would definitely recommend them to anyone.