Ten best fishing knots are clearly illustrated on three waterproof plastic cards. Handy size for pocket, vest, tackle box or boat. Bonus: Also folds out to a twelve inch ruler! Best selling fishing knot guide in the USA. 10 most popular knots: Improved Clinch, Palomar Knot, Uni Knot, Surgeon's Knot, Double Uni Knot, Perfection Loop, Dropper Loop, Surgeon's End Loop, Nail Knot and Blood Knot.