- Ceramic balls resist wear and corrosion.
- Nylon cages.
- Tight tolerance CNC lightweight aluminum spacers.
- Over 20% lighter than traditional Built-In style bearings.
- Aerospace lubricant.
- Metal backed rubber shields keep lubricant in and contaminates out.
- Set of 16 bearings and 8 spacers.
- Same bearings used by Rick Pronk to establish the men's 24 Hour Ultraskate of 313 miles.