Davis Instruments Spar-Fly Top mount or side mount A classic look for all classic yachts and dinghies High viz vane and marine-grade construction Spoiler holes in the vane reduce lift and increase accuracy Unaffected by angle of heel Comes equipped with both a top mount fitting and the new quick-release side mount Easily seen from the deck because of its V-shaped silhouette and bright red color Weight: 1.25 oz; Length: 15 in