Blood Knot

     This is a high strength knot to join two similar  diameter lines. It's low profile enables it to run smoothly through  rod rings.It can also be used as a ( half blood) to attach hooks, swivels, oval links etc. If you carefully melt the trimmed ends it will reduce the chance of damage to your thumb when casting,also helps prevent weed from catching on the knot. 

Allbright Knot        Clinched Knot        Grinner