1)Neocube,nanodots,buckyballs,magnet balls 2)Nickel,silver,gold,black,red,blue ... ,green etc 3)4mm,5mm,6mm,7mm SGS/CE/CPSIA 4)N35 neocube ... ,magnet cube,magcube,magnet balls,magnet sphere,buckyball,nanodots is a ... from younger children and pets.Main specs of our neocube:Grade: NdFeB rare earth material N35Diameter: 4. ...