304 stainless steel ball bearings drilled and ready for silver brazing them to rods.
You can use these balls with the ball&socket joints available in the this page.
2 and 3 mm balls are the only ones that are not ball bearings, those are CNC machined from 304 stainless steel to ensure its roundness and allow a fluid rotation inside the articulations, according to the industry standards UNE-EN ISO 9001.
Drilled ball bearings & CNC balls
2 and 3mm CNC machined balls
4 to 12mm drilled ball bearings
All 304 stainless steel