Silicon Nitride II (SiN)

Silicon Nitride is the winner when it comes to its ability to take the heat and abrasion dished out by extreme saltwater conditions and long screaming runs against tight drags. Use originally as a ball bearing material in jet engines, SiN can handle just about anything including wire line. SiN rings are slightly heavier and larger in diameter than other rings to maintain the rugged specifications that make them the perfect choice for heavy duty boat or offshore rods.