Genuine Shimano Click Spring (part #10K07) — the tension spring that powers the click mechanism, providing the audible clicking feedback during spool rotation and drag engagement. A weak or broken click spring silences the reel's clicker, eliminating the audible feedback anglers depend on for monitoring line tension. Cross-references with Shimano part number TGT1484. OEM replacement ensures perfect fit and factory performance. Available from Offshore Tackle & Repair in Stuart, FL — your trusted source for genuine Shimano reel parts.