I use this leader for multiple species and does a great job at all of them. I run the 20lb leader for my walleye fishing for short leaders and leaders on lead core. I use the 30lb for leaders on copper for steelhead and salmon. Finally, I use the 40lb for leaders on dipsy divers. I run a 30 foot leader on the divers without a snubber and have never had a leader break. It is tough stuff!