Blind Spot Mirror 1.97" Round Shape, Convex & 360&deg; Adjustable, Universal for all Cars, Trucks & Motorcycles [Chrome] Universal Silver 360' Adjustable Blind Spot Mirror Convex SR100 (1.97") Convex wide angle (100R) mirror eliminates blind spots. Adjustable 360" mirror rotation fits different driving positions. Large mirror surface(2" dia.) effectively increases viewing angles. Suitable for installation on rearview mirrors and side mirrors.