Rigging Screw Covers for protection of sails & clothes. It is always a shame to have expensive sails or clothes spoiled if this could easily have been avoided in an inexpensive and simple way. The round rigging screw covers are kind to your sails, sheets and clothing. Nothing can get torn on the rigging screws. We recommend Rigging Screw Covers as a simple solution which will quickly turn out to be a good investment. They are available in a neutral white color in 4 different sizes.