Item100% bamboo silver charcoalGradeAAAMaterial100% bamboo charcoalCarbon content93%Moisture4%Ash6%Burning time120 minsHardness 95% (not easy broken )Size and package 1) 90*25*12mm, 3pcs/bar, 20g/bar2) 45*25 *12mm, 2pcs/bar ,10g/barPackaging1) 3pcs/bar,10 bars(30pcs)/box,48boxes/ctn2) 3pcs/bar,20bars(96pcs)/box,24boxes/ctn..