ChiaoGoo Bamboo Circulars are made of Moso bamboo which is the strongest bamboo out of over 1,000 species. The joins are fantastic, the nylon cable is pliable and the tips swivel freely! Needle size is permanently laser imprinted on each circular.
Sizes US 0 (2mm) through US 2.5 (3mm) have memory-free cable and sizes US 3 (3.25) and larger have a nickel-plated, copper join that is glued and crimped to guarantee no separation. Sizes US17 (12.75mm) through US 50 (25mm) are made of wood.