... ;5) Size: According to customers' request;6) Coating: Ni, Zn, gold, copper, epoxy and so on;7) Application: Sensors, motors, rotors ... the coatings, such as Zinc, Nickel, Nickel-copper-nickel, Silver, gold-plating, Epoxy coating, etcYour NeoCube sets itself apart from other ... with a real feeling of accomplishment and pride. 216 magnetic beads toy