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Usually used with a helicopter set-up like the Heli-Safe

The Mystery Ranch team has their system figured out

Hagane Body with built-in toughness and durability Hagane Gear with strength and power of forged metal G-Free Body shifts reel's center of gravity closer to rod MicroModule Gear II for smooth gear feeling XfinityXCross distributes load placed on gear tooth surface across wider area X-Ship improves gear durability X Protect for higher water-resistance performance Infinity Drive creates exceptionally light winding DuraCross for smooth and reliable drag performance SilentDrive removes unnecessary noise and vibration Anti-Twist Fin provides enhances line management One-piece bail allows line to travel unimpeded to line roller Long Spoke Spool for smooth line lay S A-RB bearings Bearings: 6+1

Plus, these reels feature Shimano X-Ship for improved gear durability even under the heaviest loads

Backing is the line that goes on the reel before the main line, and its important for adding extra length and strength to your line