This Fiber Optic Piano Wire gives you an easy way to salvage a fiber optic connector in the case that an optical fiber breaks inside the ferrule during connectorization. Also allows you to remove broken fiber from bare fiber adapters. Music wire is a high grade, uniform steel wire originally intended for strings in musical instruments. AISI 1085 spring wire has excellent fatigue properties and will endure high stress. This wire is made in accordance with ASTM A228 (Chemical / Tensile Only) and supplied in 8 pieces, 3 inches (76.2mm) long.