Thru-Hull Flush Mounted Transducer Perfect for water sports which require continuous accurate speed measurements like water-skiing, where boat angles can sometimes interrupt transom mounted senders. The thru-hull flush mounted temperature and speed sender offer virtually no drag. Easy installation and accuracy makes this sender the perfect choice for water sports. Specifications30 10 Meter Cable IncludedRequires 2 hole in vesselEcho-sounding up to 200Reads Water Temperature and SpeedUseable Shaf