These swivels have one very large and one normal size eye. They are finished in Korda's trademark 'anti glint' dull-grey and have three major uses. Firstly, they make very smooth running rigs when uséd as a replacement to the swivels found on the top of our leads. The second obvious use is for helicopter rigs. The large eye will rotate better if a large bead is uséd, whereas a smaller swivel would bump around the larger beads circumference. They can also be uséd at the top of a link for the marker float - the large eye will allow the line to pull through that bit easier than a standard swivel.