We have now added a PTFE coated version of our incredibly popular Ring Swivels, which is designed to ensure that they spin even more freely. Polytetrafluoroethylene (PTFE) has one of the lowest friction coefficients of any solid material, which makes it perfect for coating swivels as it reduces any friction between the barrel and the eye, and the freer spinning they are, the less chance there is of tangles, plus can make some rigs more efficient as well when it comes to hooking fish. The PTFE Ring Swivels are perfect for use with helicopter rigs, hinged stiff rigs, and all sorts of other set-ups. They come in a choice of size 8 or 11, and there are eight in a pack.