Approximately 100 balls, each with a diameter of 2mm. Steel balls These are also useful for miniature crafts and other projects. We highly recommend them to creative individuals with plenty of ideas. Material: SUJ2 Diameter: 2mm Shipped anonymously (free shipping). Shipping is planned via Yu-Packet Post or Nekopos. There are 7 in stock. If you would like multiple sets, please let us know the number of sets in the comments section. The shipping cost will be reduced for combined shipping. Please note that there may be delays in communication due to travel or work. Also, shipments may not be possible on weekends, holidays, Golden Week, year-end and New Year holidays, and Obon. Please be aware of this if you are in a hurry. Thank you for your understanding. Applications: Agitation, spraying systems, appliance parts, casters, drawer slides, locking mechanisms, semi-precision bearings (Management number 2)