[16 Pcs 5 Balls Zro2]

Bearings
High precision and high speed 608 five ball zirconia hybrid ceramic bearing! Special bearings for roller skating competition!
Professional racing five-ball design effectively increases speed while being more wear resistant, high temperature resistant, self-lubricating and easy to maintain.
Smoother grooves!
1, Selected 5 G5 grade zirconia ceramic balls to reduce deflection, waterproof, wear resistant, acid and alkali resistant, high temperature resistant, resistance to electrical insulation, multiple polished slides for smoother and faster speeds. The single-sided stepped dustproof design reduces dust and sand intrusion.
2, bearing steel has high hardness, tensile strength, considerable toughness and contact fatigue wear resistance certain high temperature resistance; bearing steel material in the oxygen content of the formation of non-metallic impurities significantly reduced, effectively reduce noise, improve torque and doubled the bearing life.