The Evolution R is the culmination of our engineers' and machinists' artistic and technical prowess. It features a fully sealed carbon fiber drag with an industry-best power-to-weight ratio. Encased in a super lightweight frame, all models are less than 4.5oz. The innovative shape of the ultra-large arbor spool is engineered to force the even winding of the line across the face of the spool as it is retrieved - something never before seen in a fly reel. Also included is Rio Elite Grand WF4F -a full line size heavier than the industry standard, and features more weight distributed towards the front of the line to easily load faster action fly rods, and is an excellent line choice for novice casters who need a little more "feel" when casting. This line is built with RIO's low-stretch ConnectCore Plus, resulting in exceptionally smooth, durable fly lines.