35 Silver Small Block Magnets - Perfect Magnets for Classroom Maps, Office Whiteboard, Filing Cabinets, Refrigerator/fridge and DIY Science Projects Tiny magnets ideal for DIY projects, whiteboards, adsorption of various steel parts, door magnets, science projects, etc. Set of 35 silver block magnets. One magnet can hold up to 6 pieces of paper. Dimensions of a single magnet is 10mm length x 4mm x 4mm. Operating Temp: Less than or equal to 80 degrees Celsius Certification: REACH,ROHS,ISO9001-2008 Great refrigerator magnets for kids pictures and crafts