The rearview convex mirror is waterproof, rust-proof, anti-collision and anti-fogging, which has long service time. The rearview convex mirror features 360 degree rotation, which can maximize your viewing angle of rearview mirror to avoid any accidents or collisions when you change lanes to ensure driving safety. Made of glass, the rearview convex mirror is shock-proof and durable to use. It is self-adhesive, which is easy and convenient to install. The length of the rearview convex mirror is 5.5cm, width is 5.5cm and thickness is 1cm. The rearview convex mirror is universal, which is suitable compatible most types of cars. It is non-marking, which will not damage your original rearview mirror. Item Name: Blind Spot Mirror Material: Glass Waterproof Level: IP65 Features: Mini, Waterproof, Adjustable Size Details: 5.5cm x 5.5cm x 1cm/2.17" x 2.17" x 0.39" (Approx.) Notes: Due to the light and the screen setting difference, the item's color may slightly differs from the pictures. Please allow slight dimension difference due to the manual measurement. The product is not suitable compatible motorcycle. Please use cleaning products to clean the original car rearview mirror becompatiblee installation. Attention: 1, In order to expand the field of vision and prevent the blind zone, it is recommended to install it on the outside of the rearview mirror 2, In order to look at the blind area when reversing, it is recommended to install it on the inside of the rearview mirror close to the lower corner of the car body. Package Includes: 2 x Blind Spot Mirrors