Half blood knot

The half blood knot (also clinch knot) is a knot that is used for securing a fishing line to a fishing lure, snap or swivel. When two half blood knots are used to join two lines they are considered as one knot and called a blood knot.

This is one of the strongest knots for tying a medium-size hook to a medium-size line such as hooksize 4 to 4/0 onto line size 6 lb to 30 lb.