These SI3N4 black ceramic bearings are designed for inline speed skating and feature a self-lubricated structure for smooth performance.
Type: 608RS inline speed skating bearings
Material: SI3N4 black ceramic balls with black oxide ring
Design: 7-ball configuration with non-deformed structure
Surface: black oxide coating resistant to rust
Cage: strengthened to avoid cracking
Size: 8mm inner diameter, 22mm outer diameter, 7mm width
Includes: 16 bearings in a container
Applicable for men’s single rocker skateboards