Protects Cows From Harmful Effect of Ingesting Metal Objects: The cast Alnico 5 cow magnet has a bright metal finish and rounded ends. For more than 50 years it has been the favorite of dairymen and veterinarians to protect livestock from damage associated with ingesting metal objects. Smooth Finished Shape: 0.50 inch diameter, 3 inch length (12.70 mm diameter, 76.20 mm length). Solid and seamless with rounded ends. Powerful Magnet:This cast Alnico 5 magnet creates superior magnetic field projection, consistent pulling force along length, and alignment of tramp iron parallel to magnet. The magnet is magnetized completely from end to end(Axially). Non and Non :The Alnico Magnets is one of the best - magnets and water-proof no coating magnets. One Magnet works for the life of the cow: Alnico magnet is one of the permanent magnet,it's also perfect for at-home explorations, science centers, after school science clubs, and more. Cow Magnets: Protecting Cattle from Hardware Disease In farming, keeping cattle healthy is crucial for productivity. Hardware disease can affect up to 10% of cattle in some areas, leading to big problems like weight loss, lower milk production, and even death. To tackle this, many farmers use cow magnets-a simple but effective tool that helps prevent this serious issue by capturing metal objects cows might accidentally swallow. A cow magnet is a cylindrical magnet designed specifically for use in cattle. These cow magnets are typically made from strong magnetic materials such as alnico (an alloy of aluminum, nickel, and cobalt) or ferrite, and they are usually about 2-3 inches long. Cow magnets are designed to be administered orally and settle in the reticulum, one of the four compartments of a cow's stomach. Their primary function is to attract and hold any metal objects that the cow may inadvertently ingest while grazing. Color: Silver Material: Aluminum Nicocobalt Package Contents: 4 x AlNiCo5 Magnets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.