Feather Vane Race 1Masthead Mount Wind IndicatorFeatures: High Stability - won't overreact, minimal flutter Carbon fiber construction to withstand the rigors of high performance racing Low Friction Bearing - the heart of Race 1 Ultralight - less than 10g all up Ultra Sensitive - the 0.3mm carbon "feather" responds reliably to the lightest of airs, you pick up the shifts before the competition 3mm shaft - fits standard burgee clip, dedicated feather vane socket included Vane Length: 8" Height: 12.99"