Home Guy Wire Guy Wire, 3/8″ Dia., 1 x 7Str, Grade 180, Galvanized Guy Wire, 3/8″ Dia., 1 x 7Str, Grade 180, Galvanized MANUFACTURED IN ACCORDANCE WITH ASTM A475 & CSA G12 CORROSION-RESISTANT MIN. BREAKING STRENGTH: 13,500LBS SOLD BY 250′ (76M) COIL