Phenix Rods Black Diamond Saltwater Casting Rod - Phenix Rods has designed the Phenix Diamond Rod with a proprietary resin and unique layering process that results in an incredibly strong and lightweight rod with an impressively small diameter. The Black Diamond will soon become one of your go to rods to bring monsters to the boat. Proprietary blend of High Modulus Graphite and High Strength Carbon Fiber Thin and lightweight Extremely strong Premium components