The Primal Raw 8'6" #4 is a fast action high modulus blank held together with extremely strong nano resin. This resin allows the amount to be used by up to half of what their competitors use. This reduces weight and increases the amount you can feel through the rod when fishing and casting. The Primal Raw is happy casting small flies up close or heaving big nymphs down and across. The 8'6" #4 is a great smaller water rod that can still turn over a couple of weighted nymphs.