The Nautilus NV Series is machined entirely out of aircraft grade Aluminum. From its low profile drag knob and counterweight to the 100 and 200 yard backing markers on the inside of the spool, these reels will impress you. All NV reels feature titanium drag shafts, and are loaded with the latest technology in high performance cermaic micro bearings. Since ceramics and titanium are impervious to the elements, you are guaranteed to spend less time worrying and more time fishing. The Nautilus NV series are the lightest reels in their class, and offer the greatest value in any big game fly reel available in the market today.