... Coating:Nickel shape:block,segment size:according to your need Permanent Neodymium Magnet mainly comprised of neodymium ,iron and boron,is the ... third generation of the rare-earth permanent magnets,Sintered Ndfeb ... properties of high remanence,coercivity,and Max.energy product. Permanent Neodymium Magnet grade:N35,N38,N40,N42,N45,N48,N50,N52( ...