1. Materials:sintered neodymium-iron-boron; 2.grades:n35-n52; n35m-n50m; n35h-n48h, n35sh-n45sh; n30uh-n40uh, n30eh-n38eh. Our advantage 1) free samples 2) all industrial shaped magnets available 3) do as per your drawings 4)100% factory direct price Note: oem service, high quality, fast delivery, best after-sale service Carton, according to your requirement