The Penn Slammer IV Spinning Reel offers enhanced sealing, upgraded drag, and refined internals for anglers targeting big fish in demanding saltwater conditions. Its full metal body and sideplate maintain structural integrity under heavy loads, while CNC Gear Technology with a brass main gear delivers smooth and powerful retrieves. The IPX6-rated sealed body and spool help protect against salt spray and splash, and the sealed Slammer drag system features Dura-Drag on sizes 3500-10500 and HT-100 carbon fiber washers on the 2500. The reel also includes an 8+1 stainless steel bearing system for consistent performance and a hydrophobic line roller bearing to reduce moisture intrusion. Automatic bail trips come standard on sizes 2500-5500, with manual trips on 6500-10500 for heavy-duty control. With its balance of raw power and refined engineering, the Slammer IV stands up to big battles and unpredictable conditions. Full metal body and sideplate for maximum durability CNC brass main gear and 8+1 stainless steel bearings IPX6 sealed body and spool for water resistance Slammer Dura-Drag system (3500-10500); HT-100 drag (2500) Hydrophobic line roller bearing prevents saltwater intrusion Spare EVA knob included (3500-10500); size-specific bail trip systems Manufacturer's one year warranty