... of MagnetMaterial:NdFeB Rare earthMagnets grade :Magnet N-( N35, N38, N40, N42, N45, N48, N50,N52), Magnet M-(35M, 38M, 40M, 42M, 45M ... , 48M), Magnet H-(35H, 38H, 40H, 42H, 45H), Magnet SH-(30SH ... Sea or Air or Courier, kinds of transportation are available Super strong permanent block magnet