Product name NeFeB N38SH Magnet Materials neodymium iron boron magnet Shape Disc, Block, Cylinder, Bar, Ring, Countersunk, Segment, Trapezoid, Irregular Shape, etc. Plating/Coating Ni-Cu-Ni, Zinc, Gold, Silver, Copper, Epoxy, Chrome, etc. Size In accordance wtith your request Grade N35 N38 N40 N42 N45 N48 N50 N52 etc. Tolerance in size ±0.1mm for width/length Magnetism direction Round: axial or radial Block: thickness Cylinder: axial or radial Ring: axial or radial Bar: height or radial Axial magnetized: magnetized pole at the flat ends Thickness: magnetized pole at the biggest surface Max Working Temperature Grade Max Operating Temperature N35-N52 80℃(176°F) 33M-45M 100℃(212°F) 33H-48H 120℃(248°F) 30SH-48SH 150℃(302°F) 30UH-40UH 180℃(356°F) 28EH-38EH 200℃(392°F 28AH-35AH 220℃(428°F) Features The most powerful permanent magnet; The highest field/surface strength(Br), high coercivity; Can be easily formed into various shapes; Applications Neodymium (NdFeB)magnet is applied in motors, sensors, microphones, wind turbines, printer, switchboard, packing box, loudspeakers, magnetic separation, magnetic hooks, magnetic holder, magnetic chuck, etc.