These Premium Quality Ceramic Ferrite like Property Magnets are relatively strong for their small size. Perfect for countless uses including Office Storage and Organization, Arts and Crafts, Hobby Projects, DIY Projects, Cabinet Door Hardware, and many other uses. Similar to n52 type. This Product is in Full Compliance with 's magnet policies and the US Consumer Product Safety Commission's magnet requirements. These are not considered strong magnets because the flux between magnets is less than 12 kG2mm2 (much lower than the maximum of 50kG2mm2).