Chain By the Yard (36inches, 3 feet = 91cm) Brass Figure Eight curb chain. Approx 2.5mm Wide, 0.8mm Thick. Each link is approx 4mm Long and 0.3mm 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.