1. Size :3mm,4.8mm,5mm,6mm,7mm 2. Normal + colorful coating 3. N35,N38,N40,N42 4. Nice Packing + ... , stress relief, dual hemispherical brain stimulation and much more.Normal Standard Size: 5mm in diameter, 216 PCS.If you have any requirments ... products , please feel free to contact with us . MAGNETIC TOY - 5MM,216 PCS,N35,METAL TIN BOX PACKING ,NEOCUBE