Japan Japanese EDO SAMURAI Kiseru Smoking Pipe black. There may be white deposits on the inside of the grate, but this is the residue of the abrasive, not dirt. Since it is manufactured without using adhesives, there may be pieces of wood caught between the brass gankubi, the mouthpiece, and the rau. Please note that this is structurally unavoidable. International Buyers – Please Note. Thank you for your understanding.