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 5.2 oz. 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.