Grommet be used purely decoratively for crafting. When used in sailing and various other applications, they are called cringles. Sometimes field workers refer to them as grunyons. If metal or another hard material has a hole made in it, the hole will probably have sharp edges. Electrical wires, cord, rope, lacings, or other soft vulnerable material passing through the hole can become abraded or cut, or electrical insulation may break due to repeated flexing at the exit point. Rubber, plastic or plastic coated metal grommets are used to avoid this. The grommet could also protect the wiring/cabling from contamination from dirt,
Sail components attach the sail to a stay, spar or mast or to prevent a free edge from fluttering or fraying. The corners of triangular sails are typically areas of high stress and consequently often have reinforced layers and tape radiating from, whether cross-cut or radial in construction. Their corners are always attached to a shackle, attached to a line or spar—the halyard at the head, a shackle at the tack, and the outhaul at the clew. The connecting shackle runs through a grommet at each of these points. There are additional points where reinforcing and grommets may occur: at the cunningham,