The Albright knot is also referred to as the Albright special, and although commonly called a knot, it's more accurately a bend. It's a strong fisherman's knot which binds two fishing lines together, both of different diameters. If you want to learn how to tie it, let Wade Bourne of MyOutdoorTV show you how it's done.
It's one of the most reliable knots for tying together two lines of unequal diameter.
The Albright works well when you have to tie the 15-pound test line on your rig to the 20-pound test you currently have on your reel spool or when tying monofilament backing to a fly line.