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), "warikan" (split tube), and "tentan" (small charcoal for lighting) 20 pieces each of "marukitchiyo" (round small pieces) and "warikitchiyo" (split small pieces) The entire process, from charcoal burning 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 number of pieces, please comment before making payment.