Rear-earth Magnets N35 grade Star shape,spec.40X2, Au coating Surface Treatment practicable: ZN,Ni,Tin,Gold,Epoxy,Parylene,Plastic packed, Telphlone Dimension RangeLength(1-200)mm Width1-80mm Thickness(0.5-40)mm Grade Available:full grade Special Star gradeRare earth magnet for Special use