Hafny Bar End Bike Mirror, Stainless Steel Lens, Safe Rearview Mirror

Amazon.com Price: $15 (as of 30/11/2020 19:02 PST- Details)

Ideal for road bikes, mountain bikes, E-bikes, hybrid bikes, city bikes, and YOUR BIKE!
Stainless steel lens Diameter 62mm – 100% safe and unbreakable
Fits inside handlebar within 17mm ~ 21mm (inside diameter)