It doesn't seem to have been used much, but it's been stored for a long time, so the condition has deteriorated. Material unknown. It sounds like metal, but a magnet doesn't stick to it. 5 pieces, 400g I'm careful about future storage, but there is a smoker in my home. If you are concerned about details regarding the product, packaging, or shipping, please refrain from purchasing. I may delete the listing suddenly. I will pack it as compactly as possible. I may change the shipping method between Kuroneko Yamato and Japan Post.