FUSHIBEARING Silicon nitride ceramic balls description:
Silicon Nitride (Si3N4) Ceramic Balls are formed from a new material suitable for
applications where high loads, high speeds and extreme temperatures are factors. Long life and the need for minimal lubrication make this
material appropriate for extreme applications. Silicon Nitride is non-porous, non-magnetic, noncorrosive, lighter than steel and, in ball form, is
harder than steel. Because ceramic balls are non-porous they are virtually frictionless and are capable of spinning faster than steel balls.
Diameter: 4.5mm.
Package: 20PCS