Thimbles Galvanised

Galvanised thimbles allow rope and wire to be looped back on itself without creating a 'kink' in the line. This ensures that the force is applied to the splice or swage and not to the underside of the loop, where jolting and flexing (common for stays in any sort of choppy water) will cause wear on an unprotected wire. 

The size is the diameter of the rope that it suits.