Die Cast Aluminum - Lightweight cast aluminum for strength and durability. Standard Arbor - High backing capacity spool. Click and Pawl * MON3/4, MON5/6 Models Only - Precision click check mechanism. Disc Drag * MON7/8 Model Only - Smooth stacked disc drag mechanism. Polymer Handle - Classic lightweight durability. Left/Right hand Retrieve - Convertible retrieve. Quick Release - Quick release spool.