<p>Hafny Mirrors can literally smash the competition.<p/> <ul> <li>Stainless Steel Lens Diameter 62mm - Unbreakable, extremely SAFE when accident happens</li> <li>Fits inside handlebar within <b>14.8mm ~ 22.5mm</b> </li> <li>High-impact nylon plus fiber - Durable frame</li> <li>Highly adjustable for mutilple viewing angles - Suitable for different height</li> <li>Made in Taiwan, High Quality, No Plastic Odor</li> <li>Designed for drop bars, road bikes, E-bikes, trekking bikes, and MTB </li> </ul> <br><b>5mm Allen key is requried to install the mirrors.</b><br> <br><b>Attention: This mirror fits 17mm - 21mm inside handlebar. ****MEASURE IT BEFORE PURCHASE*****</b><br><br><b>Attention: This mirror fits 17mm - 21mm inside handlebar. ****MEASURE IT BEFORE PURCHASE*****</b><br><br><b>Attention: MAKE SURE THE END OF YOUR GRIPS CAN BE UNPLUGGED TO INSTALL MIRRORS </b><br> <br>