Grommet Slings are continuous or ‘endless’ loops of wire rope (they can also be made of polyester or other rope, but we will be dealing with wire rope grommets here). A cable-laid grommet is a sling in the form of a continuous/endless loop. Similar to the cable-laid rope, a grommet consists of 6 strands twisted around a core wire. Unlike a cable-laid rope,a grommet is produced from one single length of steel wire rope. That means that the ends of the wire rope are tucked into the grommet through a splicing process in order to form the core. Grommet Slings have many advantages over other slinging methods, chief among them being greater flexibility, ease of slinging, and greater WLL.