The Shimano Aero Technium XSC features Shimano X-Ship gearing for   smoothness and efficiency. This reel also features super slow   oscillation for outstanding line lay and propulsion line management   system for great castability. This is the ultimate surf casting reel   with Aero Wrapp II, Instant Drag, and CF Gear technologies.

• X-Ship:  Positioning the pinion gear close to the center line of the large   diameter drive gear, more power is transferred from the handle to the   rotor, the pinion gear is supported by 2 Shimano A-RB roller bearings to  create more stability

• Aero Wrap II: is a worm gear oscillation  system with specially designed pitch to create optimal oscillation  speeds. This provides great uniform line lay to reduce loss of energy  during the cast.