Tar Bankline. This cordage is tarred to add grip to knots and as a protective barrier to your line. It is a great replacement to 550 and helps preserve 550 when doing smaller tasks that would otherwise use up your 550 supply. This cordage has varying strengths up to 340 pounds. This is my number one go to cordage. Great for fishing, anything around water, traps, net making. It can be found on some fishing gear sites and net making sites.