1.Block Generator Neodymium  Magnet                                  Block Neodymium magnet is an alloy magnet made from ND,Website: , Fe, B and other trace metal elements. It is a rare earth magnet known so far for the strongest magnetism as well as high performance (8MGOe-55MGOe) and good coercive force. Proven production process, strict quality assurance, complete technical service and remarkable cost performance.2: Neodymium Magnet featuresDescriptionSintered Rare Earth Permanent Block Motor  Neodymium MagnetMaterialNeodymium-Iron-BoronWorking TemperatureGradeMax. Operating TemperatureN35-N5280°C  (176°F)33M- 48M100°C (212°F)33H-48H120°C (248°F)30SH-45SH150°C  (302°F)30UH-40UH180 °C (356°F)28EH-38EH200°C 392°F)28AH-35AH220°C  (428°F)      Magnet ShapeDisc, Cylinder, Block, Ring, Countersunk, Segment, Trapezoid Customized shape are available.      Magnet CoatingNi-Cu-Ni, Nickel, Zn, Gold, Silver, Copper, Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.3:The general features of Speaker Neodymium Magnet are as follows:Size:According to customizedShape:Disc,Block,Ring, Cylinder, Arc,and customizedSurface coatingNickel,Zinc,Gold,Sliver and EpoxyPackage:33X26X23 Standard export packageDelivery time:15-20dys