Are you having trouble adjusting nylon cord rimless? Does the cord pop out of the lensí groove as you adjust the temple? The Tri-Angling Plier is the perfect tool for adjusting the temples without putting pressure on the endpiece. Use a piece of cellophane tape to protect the frame surface and then safely bring temples in or out without stressing the nylon cord or lens. An excellent tool for adjusting delicate corners or reshaping a clip-on to conform to the frame.