Whether you’re a beginner or seasoned angler, the Pro Knot Fisherman’s Ultimate Knot Guide will serve you well when you’re trying to remember the steps of popular fishing knots. Featuring a three-card set made from waterproof plastic cards with no-rust brass grommets, the Pro Knot Fisherman’s Ultimate Knot Guide offers 10 of the best knots for all types of fishing. It even provides a fold out 12” ruler so you can measure legal size of certain fish species. Keep it in a boat compartment or tackle bag, the Pro Knot Fisherman’s Ultimate Knot Guide is very helpful and portable how-to guide for tying knots while you’re out on the water. Dimensions: 4-1/4” x 2-1/4” x 1/8” Included Knot Instructions:-Improved Clinch Knot-Palomar Knot-Uni Knot-Surgeons Knot-Double Unit Knot-Nail Knot-Surgeons End Loop-Dropper Loop-Blood Knot-Perfection Loop