This is undoubtedly a must-have for tightening your leader knot. Braided mainline to a leader is a very critical knot that must be tightened extremely securely so that it cannot come loose. The leader knot often has to pass through the rod guides, which can cause the knot to loosen. Tightening the knot is also the perfect check to ensure it is strong enough. You should not be able to break the knot. Wrap the line 3 times around the rubber, and you'll have 100% grip.
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