Ceramic balls and beads are used in bearings, references (inspections).

They come in various colors and sizes.  Silicon nitride comes in black and gray colors, Zirconia and Alumina come in gray color.

Material: silicon nitride (Si3N4) , zirconia (ZrO2) , and alumina ( Al2O3)

Specification: 0.3mm~60mm , with different gauge.

Precision: G3 ~ G20