Comes with Nanbu iron ball (leaf type) chain for convenience. Handling Precautions: When boiling or taking it out, it is hot, so please be careful of burns. Material: Body: Cast Iron, Nambu Iron; Chain: Stainless steel; Size: Approx. 0.8 x 2.0 inches (2, 7 x 5, 7 x 19, 8 cm).