Easy installation: Tighten the rearview mirror onto the handlebar with a screwdriver (screwdriver not included). Designed for quick setup on most standard handlebars. Reflector for added safety: A red reflector is mounted at the back of the mirror to boost visibility to oncoming traffic, helping to alert other road users and improve riding safety. Adjustable positioning: The end of the mirror features a flexible lever that allows easy adjustment of the mirror angle and position while you ride. Universal compatibility: Reflective safety glass mirror fits handlebars with a diameter of 2 2.2 cm, suitable for most mountain bikes and road bikes. Material and durability: The mirror uses reflective safety glass for clear rear visibility and reliable performance. Use scenarios: Urban commuting: In heavy traffic, the mirror lets you check behind without turning your head, while the red reflector helps other drivers notice you. Night or lowlight riding: Enhanced rear visibility with the reflector and glass mirror improves safety on dim roads. Group rides or road races: Quick adjustment of the mirror position with the flexible lever lets you maintain awareness of riders behind you without taking hands off the handlebars. Quickfit, reliable option: Lightweight and simple to attach, this mirror across common bike types provides practical rear visibility without adding clutter or complexity to your setup.