This is the perfect product to finish the end of the swivel on any running rig: it not only protects the knot but also significantly helps reduce the formation of tangles. It features two outer rubber sections of different diameters joined at an angle to ensure the lead sits at the perfect angle to avoid tangling. The Run Rig Rubber slides perfectly over the terminal swivel and is compatible with all Korda fused or leadcore leaders, as well as rig tubing. It is available in packs of ten pieces in algae, gravel, clay, or silt colors.