... more features: Material: Made by 216pcs high quality standard N35 or N38 Neodymium magnet balls.Diameter: 4mm,4.8mm,5mm,6mm ... )Color: gold, silver,black nickel, blue, red ,yellow ,green ,orange or othersMagnetic force(N35grade):5mm 5000-5400guass,6mm 5400-5800guass,7mm ... /velvet pocket/round metal gift tin box/vacuum package/blister or OEM as your package design, and special design master carton box ...