Feature 1HEAVY DUTY: Our strong round neodymium magnet is heavy duty type and has strong magnetism, suitable for refrigerators, whiteboards, doors, cabinets, etc. 23 LAYER PLATING: Strong round neodymium magnet is with three layers of plating make the magnets appearance slick and bright, strong and corrosion resistance. 340PCS IN KIT: This round neodymium magnet kit contains 40pcs strong magnets and lightweight for you to carry them to anyplace. 4GREAT DECORATION: Strong round neodymium magnet can be used as card display and production decoration, suitable for DIY and so on. 5SUITABLE APPLICATION PLACES: Strong round neodymium magnet is great for office, school, home use, such as kitchen and warehouse.Item Type: Round Neodymium Magnet With HoleMaterial: Neodymium Individual Product Size: Approx. 8 x 3mm / 0.31 x 0.12inHole: M3(3 mm) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List40 x MagnetNoteManual measurement may have error. Please make sure you don't mind before ordering.