Davis Windex 15 Wind VaneDavis Windex Wind Vanes deliver exceptional performance at the best value. This wind vane features a sapphire jewel suspension bearing, large fin-low inertia vane, and easy-to-read, fully adjustable tacking tab system. Reflector tape on the vane and tacking tabs makes the Windex 15 easy to see day and night. The Windex 15 has a 15" vane that is sturdy and offers years of use. These vanes have been wind tunnel tested to wind speeds of 80 knots. Includes through-bolt or drill and tap mounting socket; 5/16" -18 stainless stud, washers and nut.Key Features: Perfect choice for all cruising and racing boats 15 feet and bigger; Sapphire jewel suspension bearing; Large fin-low inertia vane; Fully adjustable tacking tab system; Bird-proof spike extends another 10" above the vane to discourage birds from landing; Stands 1.75" tall and weighs just 3.6 ounces; Click to Download Davis Windex 15 Assembly Instructions