SLS3 construction uses inner and outer spiral wrap layers of carbon fiber to sandwich middle layers of alternating longitudinal carbon and glass. The spiral wraps maintain a round cross section in the blank when under load which helps the blank handle higher loads. The middle layers of unidirectional carbon and glass create the backbone of the rod by utilizing the strength of glass combined with the lightweight of the carbon fiber to deliver a strong, balanced, and thin rod blank. With ideal tapers and quality craftsmanship, Ocean Assassin rods should be your first choice when looking for an offshore trolling rod to match Penn International reels. Every Ocean Assassin rod is equipped with top quality components including Pac Bay Roller Guides, Fuji ring guides, PacBay bent Butts and reel seats. EVA foregrips give anglers added comfort for long battles and maximize grip against hard pulling fish.