Cuttlefish Bone is a natural calcium source for all types of aquatic turtle and Birds. Simple place in enclosure for beneficial calcium on as-needed basis. Specifications: Moisture : 12 % max. Calcium content : 34% min. Broken : 3-5% max. Shape: Oval, trimmed or untrimmed. Length : 5-9cm, 10-15cm, 15-20cm. or 20cm Up. Condition : Clean, whiten, 100% Sun dried, good smell, no chemistry. Packing: Bulk Carton Box or as per customer's requirements