Quartet Round Ceramic Magnets. 1/2". For use on magnetic whiteboards. Magnets help you make the most of your magnetic planning board. Pack includes 4 each of Black, White, Blue, Green and Red. 20/pack. Round ceramic magnets are ideal for steel planning and bulletin boards and surfaces, and dozens of other uses around the office, home, school and shop. Magnet pack includes four each of black, red, blue, green and white magnets. General Information Manufacturer:ACCO Brands CorporationManufacturer Part Number:90200Manufacturer Website Address:http://www.acco.comBrand Name:QuartetProduct Name:Ceramic MagnetMarketing Information:Round ceramic magnets are ideal for steel planning and bulletin boards and surfaces, and dozens of other uses around the office, home, school and shop. Magnet pack includes four each of black, red, blue, green and white magnets. Packaged Quantity:20 / PackProduct Type:Board Magnet Product Information Quantity:20Shape:Round Physical Characteristics Product Color: Black Red Blue Green White Product Material:CeramicDiameter:0.50" (12.70 mm) Miscellaneous Recycled:NoAssembly Required:NoCountry of Origin:China Product Numbers: 34138-90200 034138902004 QRT90200 278192