Mounting: Universal bar end fitting.
Mirror Material: Unbreakable chrome plated ABS plastic.
Mirror Dimensions: 60mm wide, 28mm high.
Handlebar Bore Minimum Diameter (Minimum Diameter of Handlebar Insert): 16mm.
The Bracket pivots in three places, allowing great flexibility of mirror placement.
The mirror surface, being chrome plated plastic, is not as even as a glass mirror. Images appear slightly "shimmery". However, this does not make it difficult to distinguish what's in the mirror.
Convex mirror surface gives a reasonable field of vision.