DescriptionDesigned to make tying blood knots fast and simple, the Dennison Blood Knot Tyer Tool is a great tool for all naglers! Simply insert the two strands of line you are tying together under the cushioned wire legs, insert the ceramic pick between the two strands, give the pick 5 or 6 twists, then insert the free ends through the hole made by the pick and pull for perfect blood knots every time! Each tool comes with an instruction manual.