Chiaogoo's 16″ (40 cm), 24" (60 cm), 32" (80cm), and 40" (100 cm) patina, bamboo circulars have fantastic joins and pliable, clear, nylon cables. They have a nickel-plated, copper join. Sizes 3 (3.25 mm) and larger are crimped to guarantee no separation AND they swivel! Needle size is permanently laser imprinted on each circular. Bamboo circulars are available in the patina color only.