Feature●【DURABLE】The block magnets are made of Grade 8 hard ferrite.Ceramic magnet is an economical choice for magnets. It has high demagnetization resistance, corrosion resistance and oxidation resistance. The magnetic force will remain forever.●【SIZE】30 pieces of ceramic hard ferrite magnets included. Each measures 40mm x 12mm x 5mm(1.57"x0.47"x0.19")●【POWERFUL】 Grade 8 ceramic magnet material with 3,850 Gaussian internal. Each piece can provide 29 pounds of holding force under ideal conditions.●【MULTIPURPOSR】These rectangular magnets have industrial strength and are great for home, office, school, arts and crafts, scientific projects and product manufacturing applications.●【WARNING】these bar magnets is very fragile, it is forbidden to collide with other metal objects (including another magnet), so be careful when you are trying to use them!Description
Ceramic Magnets 1 3/5" x 1/2" x 1/5" Rectangular Magnets Heavy Duty Blocks Grade 8 Ceramic Rectangular Bar Magnet for Crafts,DIY, Science and Hobbies(30 Pack)