It's light weight and has the power to stop big fish. Thunnus takes a page from our bicycle divi-sion using carbon materials in high impact situations. Thunnus CI4 is up to 7 ounces lighter than its predecessor without sacrificing any power. Thanks to super smooth main and baitrunner drag; Thunnus CI4 is the most efficient live bait spinning reel on the market with unmatched adjustabili-ty for fishing any bait in any condition.