Shimano 2020 Metanium is tournament grade bait caster for serious anglers. It is ultra light and super smooth, and you may focus on fishing. Its smoothness is achieved by two major features, Coresolid one-piece frame construction and micro-module gears. Its Coresolid main frame is now structuring palming side cup as one-piece, reinforcing the total body sturdiness. Gear side cup is also made of magnesium alloy metal to make it very solid and light. Spool holder is made of aluminum. Micro-module gears remove gearing noise by half to offer very silky smooth gearing, also longer life of gears. Magnum Light spool 3, light weight spool serves well for light rigs and long casting distances.