Coconut Shisha Charcoal: The high quality charcoal for shisha are made of highly coconut charcoal. They are pure nature and no any toxicity. The products are no smoke, no smell, no spark, non-toxic, easy to light, long burning time, economic and environmentally. Specification - Large size: 40*30*25 mm Medium size: 25*25*25 mm Small size: 25*25*15 mm Shape: cubic Calory (J): 6400 - 8000 Moisture: 5% max Ash: 3 - 5% Hardness: 90% min