Sage R8 Core Fly Fishing Rod - R8 Core is focused on maximum versatility and applies new revolutionary R8 material technology through our forward-thinking lens of what Sage is seeing out on the water - where one rod needs to show even greater range. At its core, R8 Core traces a direct lineage to Sage's multi-application / fast action vision, one shaped by the fishing evolutions happening all around—from habitats we stalk and waters we frequent, to the flies we fish and the diversity of species we now target.