Very small with a wide field of vision. Especially useful as an addition to existing mirrors. The facts: Only 8 cm (~3-1/8”) diameter. Convex (curved) mirror for optimal view field. Reduces/eliminates blind spot (when used as an additional mirror). For all BMWs with original or Wunderlich handlebar end weights. CNC machined aluminium adapter. Easy to fit. Anodised aluminium surface. Fit to original handlebar end weights (not on the R 1200 ST or F 800 R). Sold as a single mirror assembly. Important note: Fitting these mirrors on their own may not be road legal in your country. Check the regulations before ordering!