This is long-burning oak charcoal. For Furo (tea ceremony brazier), 5 pieces, approximately 3kg. Includes: 5 pieces of Doudan (body charcoal), 1 piece of Wadoudan (ring-shaped body charcoal), 10 pieces each of Marukan (round tube charcoal), Warikan (split tube charcoal), and Tenzumi (small charcoal for lighting), 30 pieces of Maru-gitchiyo (round gitchiyo charcoal), and 20 pieces of Wari-gitchiyo (split gitchiyo charcoal). The entire process, from charcoal making to cutting, is carefully done by an individual. After cutting, fine powder is removed with a blower. If you wish to purchase two boxes or change the set contents, please comment before making payment.