You are now viewing this is a width and thickness of 20mm rare earth neodymium block magnets, length size 40mm (1.57 inches), support along the length, width or thickness of the magnetization, ordinary N35-N54 grades of the maximum temperature resistance of up to 80 ℃, such as the need for heat resistance 150 ℃, 180 ℃, 200 ℃ performance grade need to choose SH, UH, EH grades, depending on the environment in which you apply.
40x20x20mm neodymium block rare earth magnet size reference picture
Closer to size;