Cat Eye BM-45 Bar End Mirror See What's Coming Without Turning Around On busy roads or mixed-use paths, knowing what's behind you without leaving your line is a genuine safety advantage. The BM-45 plugs into the end of your drop or flat bar and gives you a clear rearview with almost no distortion. The glass lens keeps the picture accurate, the aluminum body handles the miles, and the minimal profile means it won't snag a jersey pocket or throw off your bar feel. Installation takes one 3mm Allen key and a few minutes. Features 45mm glass lens nearly distortion-free rearview for accurate reading of traffic and conditions behind you Aluminum and glass construction durable pairing that holds up to daily use on road, gravel, or commute routes Expanding plug mount fits bar inner diameters from 16 to 25. 4mm, compatible with both drop and flat bars 35g weight adds rear visibility without measurable impact on handling or bar feel | Cateye | Bm-45 Bar End Mirror Black