strong neodymium generator magnet , High Quality Magnet, disc neodymium magnets , permanent neodymium magnets 1. Shape: Disc(Cylinder), Block, Ring, Countersunk, Segment and more, trapezoid, irregular shape, customized shapes are available2. Grade:N35,N38,N40,N42,N45,N48,N50,N52, 33M-48M, 33H-48H, 30SH-45SH, 30UH-40UH, 28EH-38EH,..