[16pcs Si3n4 5ball 627]

Bearings
Craftsmanship: inner and outer rings of natural bearing steel, ultra-precise grinding of the grooves, more smooth and fluent, selected five G5 grade silicon nitride ceramic balls, reduce friction, faster, wear-resistant, high temperature resistance, resistance to electrical insulation.
The single-sided dustproof design effectively reduces the intrusion of dust and sand, and also facilitates daily cleaning and maintenance.
Cage wrapping all or part of the rolling body, and with it the movement of the bearing parts.
It is used to isolate the rolling element, to guide the rolling element and to improve the internal lubrication of the bearing.
The PTFE material is more resistant to high temperatures than nylon, making it more resistant to wear and high temperatures over long distances and at high speeds. Long lasting durability is guaranteed.
Uses: for art skates, for double skates, for skates, for roller skates, for skateboards, for inline skates, for power tools, for vibrators.
Packaging: 16 pieces/box