30LBS Waterproof Rare Earth Magnets, Black 24Pack Neodymium with Countersunk Hole-0.78 * 0.2 inch

About this item

• 【VERY STURABLE 】These magnets for science projects with countersunk hole and screws are made of metal material, more sturable and long lasting than the plastic one. These strong craft magnets are protected in the steel cup and will not break in normal use, which greatly increases the life of the cup magnets.
• 【STRONG POWERFUL】The powerful magnet has a strong magnetic field, industrial magnets can attract and fix various metal objects, such as nails, screws, etc, making work more convenient and efficient.
• 【MULTIFUNCTIONAL USE】Wall magnets measure 20mmx5.5mm (0.78x0.2 inch), tolerances: ±0.2mm x ±0.2mm, Rost-resistant magnets can be better applied to companies, industry, scientific research, furniture and household, Black magnet is perfect for the black home decoration, hidden combination.
• 【PROFESSIONAL SERVICE】Our circle magnets are manufactured according to ISO 9001 Quality Systems. We are a magnet supplier with professional strength. You can certainly find any magnets you want in our shop, If you need other n52 neodymium magnets, Search us and we can meet your needs.
• 【Rustproof and water-resistant】These extra-strong magnets feature a triple-layer coating of black epoxy, nickel, and copper. This premium coating delivers a glossy finish along with rust resistance for the water-resistant magnets. The surface is coated with automotive-grade epoxy, passing a comprehensive salt spray test of over 72 hours, effectively addressing the rusting issue commonly associated with neodymium magnets.