1,made of hexamine 2,10g ,12g ,25g 3,burning 10,12,25 mins 4, odorles ,smokeless ,long burning 1,made of hexamine 2,size : 10g ,12g ,25g3,long time burning ,one pcs can burning 10mins ,12mins ,25mins .4,used for charcoal lighter , main market is mideast and european .now have many cooperation , hope u will be our one of our partner future . Charcoal firestarter (hexamine solid fuel )