Specially formulated to meet the salt and trace mineral dietary requirements of rabbits, minks, chinchillas, guinea pigs, hamsters and other small animals. Standard 3 oz. spools available in plain white and red trace mineral flavors. Trace minerals include manganese, iron, magnesium, sulfur, copper, cobalt, zinc, and iodine. Spools designed with center hole for easy placement in Roto Salt brass spool holders for convenient free choice feeding in small animal living environments. Sold in bulk or cases of 5/24 (3 oz. spools). Each box in the 5/24 case is die cut to create a counter top display case as needed.