Pet Lodge's 3 oz Mineral and Salt Spool is a tasty treat that provides the salt and trace minerals that small animals need to maintain good health. Formulated for rabbits, hamsters, guinea pigs, ferrets, and chinchillas. Appropriate for free-choice feeding (animals will consume only what they need). Spool is 2 inch in diameter by 1 inch thick. | Pet Lodge 3 oz. Mineral and Salt Spool