What You Will Get: you will get 2 pieces of bike mirrors, which can help you get a clear view of the road condition behind you so that you can avoid possible traffic accident, reducing the accident rates to ensure your safety while cycling.The safe rear mirror is about 7.3 cm in length, 5.3 cm in width ,please confirm the size before purchasing . Flexible 360 Degree Adjustment: adjustable rotatable handlebar mirrors can rotate 360 degree, which can be adjusted to any direction you need, helping you acquire the overall road condition in different directions rather than just the condition behind you, reminding you of the danger from different directions Quality and Strong Material: the bicycle mirror consists of lasting acrylic convex mirror, ABS and PVC material, waterproof, firm for a long service time; It can keep in good condition after exposed to the strong sunshine and heavy rain, providing you with a clear view even in bad weather Installment with No Tools: the cycling rear view mirror is equipped with a non slip adjustable rubber buckle which can be attached to your handlebar tightly with bare hands, no tools required; Just install the rubber strap on the handlebar.And suitable for the handlebar of diameter 0.59-1.18 inches/15-30 mm; It is also easy for you to remove the mirror from the handlebar when you dont need them; Please make sure the product size before purchasing. Universal Adaptability: the shockproof acrylic convex mirror can be applied to most handlebars of conventional bicycles tightly, such as mountain road bike e-bike, MTB bicycle, motorcycle, electric scooter, etc.