Features five powerful ceramic magnets strategically assembled with power-enhancing pole pieces for superior magnetic strength. Stronger, durable and slightly heavier making it easier for the magnet to travel to its destination and stay there. Used by dairymen and veterinarians for animals. Helps prevent Hardware Disease by attracting stray metal from the folds and crevices of the rumen and reticulum. Non-toxic and non-corrosive in use. One magnet works for the life of the cow. Includes one magnet.