The Double Uni Knot is a reliable and strong knot commonly used by anglers to join two fishing lines of similar or different diameters, such as monofilament to braided line. It consists of tying two uni knots back-to-back, which creates a secure and streamlined connection that passes easily through rod guides. The Double Uni Knot is especially favored for its simplicity, strength, and versatility in both freshwater and saltwater fishing. ----------------------------------------------------------