Our sleek new ultralight BM-45 barend mirror easily attaches to drop and flat bars, making it perfect for all bikes. Constructed of aluminum and glass for durability and nearly distortion-free viewing, the BM-45 represent the height of handlebar mirror construction and design. Minimal projection from the bar means never having to sacrifice clean aesthetics for critical rear-view safety again. TECH SPECS Lens size:- ;45mm Weight:- 35 grams Applicable diameter:- Inner diameter ;1625.4mm Tightening torque:- 8.5Nm