Davis Spar-Fly 
Spar-Fly combines needle bearing balance, high impact plastic, and marine grade metals for unsurpassed sensitivity and durability. Spoiler holes in the vane reduce lift and increase accuracy. Spar-Fly is unaffected by angel of heel. Easily seen from the deck because of its V-shaped silhouette and bright red color.
Weighs only 1.25 oz. (35 g).
Owner's Manual (pdf)
We Also Recommend
Raymarine i60 Wind Display System - Analog Close-Hauled [E70062]
Raymarine i60 Wind Display System [E70061]
Raymarine Wireless Multi Wind System [T101-916]