From the manufacturer:
Light in weight with a warm natural touch, bamboo is the ideal material for making knitting needles. Knit seamless garments for perfect creations.
These circulars have fantastic joins and pliable, clear, nylon cables. Hooks swivel freely on cable. Size is permanently laser imprinted on each hook.
WARNING: Choking Hazard. Not suitable for children under 3 years. Imported.