4PCS 608 Full Ceramic Bearings 8x22x7mm ZrO2 Deep Groove Ball Bearing
Material: ZrO2 (Zirconium Oxide). FUSHI 4PCS 608 Bearings For Skateboards. Upgrade your skateboard with the FUSHI 608 Full Ceramic Ball Bearings. Type: Full Ceramic Ball Bearing. How do I maintain ceramic bearings?.