NB PRO Tackle leadcore darkens down when wet, to make it even more camo. 45lb (20.5kg) breaking strain. Super fast sinking, very tough and very easy to use straight out of the bag. They come with a soft lead core, to make them sink smothly to the bottom. One of the most efficient leaders we have ever seen. Made in a dark camo color. 2 leaders per pack with a size 8 quick change swivel for easy use.