Elevate your sailing experience with the Raymarine Only Wind Arm Vane & Cups Masthead, R28170. Designed for precision, this masthead unit features a durable construction that withstands the elements while providing accurate wind readings. The included vane and cups ensure reliable performance, helping you make informed decisions on the water. Easy to install and compatible with various Raymarine systems, it’s an essential upgrade for any serious sailor. Whether you're racing or cruising, trust the R28170 to deliver the data you need for a smooth sailing adventure.