MEASUREMENTS:
mm: 5.25 ID X 11.75 OD X .97 MATERIAL X .54 DOME HT
IN: 0.207 ID X 0.463 OD X 0.038 MATERIAL X 0.021 DOME HT
DESIGN CHANGE WARNING!
Read the full design change info to make sure that you order the correct parts for your version of the reel.
On the 320LD and 330LD:
18-975LD is part of the NEWER system in the reels and is NOT used on the older versions from 2004 -2007
Standard on all the other reels.
NOTE: Penn is sending 18-975's when these are ordered, which is a slightly smaller spring but apparently will work as a sub when these are gone. Currently still in stock.