... section tidy, a very refreshing sound of metal steel when charcoal knock charcoal, good hardness, specific gravity:1.3-1.5, length:10 ... -35 cm, diameter: 3.6 -3.8 cm, the fixed carbon of charcoal: 88 ... tidy, a little bit refreshing sound of metal steel when charcoal knock charcoal, good hardness, specific gravity:1.1-1.2, length:8 ...