Perfect combination parts of Swivel & Split Ring with fantastic spin performance.
Using Vanfook's "Ultra Spin Swivel" (US-11) and "4X Ring" (4R-75S).

● Able to have fantastic spin performance in swivel due to special coating has given on the surface.
● Realizing 3 to 4 times faster in spinning speed compared with normal swivel.
● Prevents from line troubles.
● Able to fit with assist hooks and lures easily & quickly!