PREMIUM COCONUT CHARCOAL BRIQUETTES FOR SHISHA Material : 100% Coconut Shell Charcoal Ash Content : Max 3% Fix Carbon Content : Min 80% Moisture Content : Max 5% Volatile Matter : 14% -15% Calorific Value : 7300 cal/gr Burning Time Average : 90 - 120 minutes Shape : cube, hexagonal, stick, or by buyer request