Includes. 2 x 500mm string & PVC placement strip. New eyeglass fixing strings made of nylon, suitable replacement for broken glasses nylon cord string. Comes with pvc slip to help enable the location of the string once replaced. View YouTube for fixing guides on how to replace half rim broken string cord. Search for a tutorial by eye talk Tools you will need : nail clippers, sowing needle and pliers to crimp cord location ( view tutorial for more details on YouTube)