... ,black,silver,gold 3)SGS certified Features of 216pcs Neo Cube:1)Mateials: NdFeb magnet2)Colors: nickel, black,silver, gold3 ... /set4) Packing:Round steel box packing1. The 216pcs Neo Cube has high remanence, high coercive force, high energy product ... such as Motor, sensors, loudspeaker, windmill, Auto, National defence, Speaker, Computer, Biology project, Medical treatment, Instrument and Meter etc.We ...