... 2)nickel,black,silver,gold 3)SGS certified Features of magnet neocube:1)Mateials: NdFeb magnet2)Colors: nickel, black,silver ... :216 pcs/set4) Packing:Round steel box packing1. The magnet neocube has high remanence, high coercive force, high energy ... oxidation than other magnet alloys10. Applications: Widly used in industrial areas and Micro products, such as Motor, sensors, loudspeaker, windmill, Auto, ...