All the big ceramic rectangular magnets 3\"X2\"X1\"(76.2x50.8x25.4mm) are made of high grade hard ferrite material-C8, they are supplied with high quality and cheaper prices. Technical Date: Material: Hard Ferrite-C8 Gauss Rating: 3,850 Gauss Pulling Force: 20 lbs. Pole ...
All the big ceramic(ferrite) block magnets 3\"X2\"X1\"(76.2x50.8x25.4mm) are made of high grade hard ferrite material-C8, they are supplied with high quality and cheaper prices. Technical Date: Material: Hard Ferrite-C8 Gauss Rating: 3,850 Gauss Pulling Force: 20 lbs. Pole ...