Add an eyebolt and string or cord to any Alnico magnet and retrieve small metal items in swimming pools, window wells, crawl spaces and more. Use as work holding devices for wood cutting, sign making or other hobby applications. Alnico button magnets have a convenient center mounting hole and each comes with metal keeper to retain magnetic strength. * * More About Alnico: Made from aluminum, nickel, cobalt and iron, alnico is primarily used for magnetic applications requiring a high heat tolerance. * * More common applications include educational and scientific experiments, magnetos, coin acceptors, clutches and bearings, relays, generators, loudspeakers, guitar pickups and cow magnets. Made primarily from aluminum, nickel, cobalt, copper, iron and sometimes titaniumMakes a great giftMost common magnet grades come in Grade 5 and Grade 8Powerful and sturdy round design in compact packaging, for small footprint on displayDurable red enamel finish resists corrosionVery temperature stable, great for high heat applicationsIncludes convenient center mounting hole for mounting or hanging; add eyebolt and string to retrieve small metal itemsIncludes a metal keeper to help retain magnetic power - remove before useIdeal for school experiments and high heat applicationsUse as work holding devices for wood cutting, sign making or other hobby applications