Ray‑Ban RX7551 Optical Frame combines a slim metal construction with a clean rectangular silhouette for everyday prescription or non-prescription wear. Key attributes: Gray | Metal | Dimensions & fit: Lens width: 54 mm | 56 mm | Bridge: 19 mm | Temple length: 145 mm | Lens height: 36 mm (size 54) | 37 mm (size 56) | Effective lens diameter (ED): 59 mm