Chain By the Yard (36inches, 3 feet = 91cm) Brass Curb Chain Approx 1.3mm Wide, 0.8mm Thick. Each link is approx 1.6mm Long and 0.8mm thick. This Chain is Soldered and plated. Colour will Last Approximatley 8-12months. Longevity depends on the person wearing, as well as how they treat their products.