Colored Black And Ferrite Permanent Magnet 100PCS.Whiteboard magnets provide a lot of promotion opportunities for your business! Made of high-quality plastic and magnets, with strong magnetism. Smooth, durable, practical, and convenient for your daily use. This circular magnetic button can be applied to offices, classrooms, homes, and any other magnetic surfaces such as refrigerators and packaging.1 location includes the shipping cost to US. Orders of 5,000 pieces or greater are eligible for sea shipping. 100% guarantee for quality. Rush Service.