This Professional Full Ceramic Bearing is self-lubracated don't need oil.
The Ceramic Bearing should avoid jumping / knocking / strike / collide it can only be used for smooth speed skating.
The bearing is with ceramic inner ring / bead / support cage / outer ring.
The White Ceramic is made of ZrO2 material; the Black Ceramic is made of Si3N4 material.
Package Included: 16 pieces ceramic bearings with container.
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Bearings
This Professional Full Ceramic Bearing is self-lubracated don't need oil.
The Ceramic Bearing should avoid jumping / knocking / strike / collide it can only be used for smooth speed skating.
The bearing is with ceramic inner ring / bead / support cage / outer ring.
The White Ceramic is made of ZrO2 material; the Black Ceramic is made of Si3N4 material.
Package Included:
16 pieces ceramic bearings with container.