Shimano AX 4000 Front Spin Reel: * Graphite frame, sideplate and rotor for reduced weight * Diecast aluminum spool for casting performance and durability * Varispeed by using an oval oscillation gear the ability to provide a consistent spool speed for an even line lay which results in excellent castability and manageability * SuperStopper II is a 1-way roller bearing that eliminates backplay for solid hooksets, yet can be turned on or off to allow back reeling