Davis Instruments Max Wind Direction Indicator Black. The tough high impact plastic vane is designed to withstand years of punishment and the abuse of small boat sailing. The stainless steel mounting arm and set screw as well as a tough plastic mounting base add to the system's durability. Wind vane lengthis 8" (20 cm). Black Max is packaged in its own unbreakable storage sleeve for safe keeping when not in use. Specifications for Davis Instruments Black Max Wind Direction Indicator: Manufacturer: Davis Instruments Color: Black Package Contents: Davis Instruments Black Max Wind Direction Indicator Davis Instruments 1295: Max Wind Direction Indicator Black