Most top-end conventional reels are built from high-grade aluminum. The metal frame has the advantage of rigidity, especially with a one-piece frame. "It is much more expensive to produce machined aluminum versus graphite," says Brandon Cotton, marketing manager at Okuma. "Aluminum is the heaviest, yet the strongest, material to use. For Okuma's Makaira series, we use quality aluminum materials, in addition to high-quality stainless steel for gearing and shafts."