Masunaga CHORD F Eyeglasses by Masunaga. Color: 52 Silver, 41 Gold, 39 Black, 22 AT-Silver, 11 AT-Gold, Size: 51-20-145. The delicate chord is played by MASUNAGA "Chord F " has a smart square shape. The classic square shape gives an intelligent impression. A 0.7mm rim that pursues thinness to the limit. The temples unique to the Chord series are made of elastic metal that is flexible and designed to gently wrap around your ears. We hope you will find the essence of MASUNAGA that resides in the smallest detail and the crystals that have been completed by continuing to pursue beauty.