These black ceramic bearings are designed for inline speed skates and professional competition use. Each set includes 16 bearings made with ceramic balls and features designed to ensure stable performance.
Material: Black ceramic with Si3N4 ceramic balls
Size: 8 x 22 x 7 mm
7 ceramic balls per bearing for stable structure
Strengthened cage construction
Black oxide surface resists rust
Dual dustproof covers
Self-lubricating, no oil needed
Includes 16 bearings delivered with an iron container