My mom recently got these rear view mirrors for her Pride scooter and they've made such a difference in her confidence while riding! The installation was super simple - they just screw right into the existing holes on the delta tiller handlebars. The mirrors are sturdy and don't vibrate or shift around while she's moving, which is important for getting a clear view. She can now easily see what's coming up behind her without having to turn her whole body, which is much safer especially in parking lots and crowded areas. The compatibility is specific to Pride Mobility scooters with screw holes - they work perfectly with her Go-Go Elite Traveller. The quality feels premium and they've held up well through daily use and some accidental bumps. If you or someone you know uses a mobility scooter and wants to increase safety and awareness, these mirrors are definitely worth adding. They're affordable, easy to install, and provide that extra visibility that makes scooter use so much safer!