The PENN SlammerA(R) IV builds on a proven IPX6 sealed body and spool with a redesigned sealed SlammerA(R) drag system that is bearing supported for extra smoothness, plus brass CNC gearing, an 8+1 stainless steel bearing system and a Hydrophobic Line Roller Bearing. Features: Full Metal Body and sideplate CNC Gear(TM) Technology with brass main gear IPX6 sealed body and spool design Sealed SlammerA(R) drag system with Dura-Drag(TM) 8+1 stainless steel bearing system Hydrophobic Line Roller Bearing Spare EVA handle knob Automatic bail trip on sizes 2500-5500; manual bail trip on sizes 6500-10500