This is long-burning oak charcoal. Approximately 3kg, for 5 uses. 5 pieces of "dozumi" (trunk charcoal), 1 "wadouzumi" (ring-shaped trunk charcoal) 10 pieces each of "marukan" (round tube charcoal), "warikan" (split tube charcoal), and "tentan" (small charcoal for lighting) 20 pieces each of "maru-gitchiyo" (round small charcoal) and "wari-gitchiyo" (split small charcoal) From charcoal making to cutting, all work is done carefully by an individual. After cutting, fine powder is removed with a blower. If you wish to purchase two boxes or change the number of pieces, please comment before making payment.