Step-by-step? illustrated "How-to" knot tying guides. Outdoor? Boating? and Paddling Knot cards are the same 17 best rope knots on 6 cards. Packaging differentiates them for different markets. Fisherman's Knot Guide is a 3 card set? featuring illustrations of the 10 most popular knots? that folds out to a 12" ruler. Waterproof.