Everyone should know the importance of using this on your lure rigs and on anything that rubs. Especially lure heads that have metal (brass) tubing usually with sharp burs. With enough pressure applied from the fish during the fight, the sharp edges of the brass tubing are enough to cut your line.
We have two sizes here, the 1/8” which usually fits within your standard 5”-9” lure which lure makers tend to use, and a thicker gauge 5/32” tubing which usually fits within 12”-14” lures and beyond.