InfinityXross prevents damage from stress points for superior durability. InfinityLoop Casting Technology's spool oscillation achieves smooth casts. An Anti-Twist Fin reduces sag and prevents uneven spool wraps. Infinity Drive delivers smooth, high-torque reeling under heavy load. The DuraCross Drag produces a smooth drag feel and fewer line breaks while maintaining high durability. Designed to excel in inshore and freshwater environments, Sustain FK integrates advanced technologies that elevate control, strength, and precision. As a member of the MagnumLite series, Sustain FK features an ultra-responsive MGL Rotor, aiding in precise lure control. Additional technology includes Infinity Drive minimizes resistance for fluid cranking, while InfinityXross reinforces gear engagement for lasting strength. InfinityLoop and the Anti-Twist Fin improve line lay and control, reducing slack and maximizing casting accuracy. Paired with a steady DuraCross Drag and Sustain FK is lightweight, resilient, and ready to perform, cast after cast.