1.Proper Dimension and Quantity: you will receive 2 pieces of car extension mirrors, and the size of the bigger mirror is about 12.5 x 11.5 cm/ 4.9 x 4.5 inches, the smaller mirror is about 10.6 x 4.3 cm/ 4.2 x 1.7 inches, and the rubber belt is about 2.1 x 39 cm/ 0.8 x 15.4 inches. Note: Before buying, please carefully compare whether your car mirror is consistent with the size and shape of our products (our products are more suitable for small rectangular mirrors) 2.Practical 2 in 1 Design: these frontier tow mirrors are designed into 2 cooperated mirrors, the bigger mirror is a flat mirror, and the smaller mirror is a convex mirror, efficient and convenient to enlarge visual range, bringing you a nice and different experience 3.360 Degrees to Rotate: our side mirror extenders can rotate 360 degrees, you can effectively adjust the mirror according to your preference and needs; What's more, just press the small mirror, you can adjust the field of vision left or right, to obtain a vertical or horizontal field of vision 4.Easy to Operate: the clips of the truck towing mirror extensions are adjustable, and we have prepared rubber belts for you, the rubber strap has antislip function, the correct use of the rubber strap can fix the rearview mirror in the correct position, maintain stability and reduce vibration. Note that since this product is an auxiliary mirror, it cannot be equivalent to the original rearview mirror, so shaking during highspeed driving cannot be avoided