Package information: you will receive 1/ 2 pieces of strap on towing mirrors in the package in total, (It depends on your choice) each of the mirror is approx. 7.48 x 4.84 inches/ 19 x 12.3 cm in size; They can fit the driver or passenger side mirror well, this car auxiliary mirror is suitable for large vehicles such as SUV, trailers, RVs, trucks and trailers, etc.; It is not suitable for small car rear view mirrors. Hard-wearing material: these black towing mirrors are made of ABS material and glass; The ABS material is quality and solid, not easy to deform and has a long service time; The glass is clear, which can provide you with a nice vision. Adjustable design: the clip-on towing mirror is adjustable, it has a rubber strap for easy adjustment; Besides, the adjustable strap is fixed on the mirror to ensure a smooth ride without vibration. Easy to install: the car's auxiliary rearview mirror has a simple use method, there are no tools required; It features an adjustable rubber straps to securely fit over the side mirror; When the strap is installed, adjust it to the most suitable length and tighten it, and then buckle it. Main function: the adjustable towing mirror has a 360 degree ball and socket adjustment, which can provide you with more visibility; The clip-on mirror can give you peace of mind, and more confidence when you drive.