Like Ceramic Hybrid, Zero Ceramic use a combination of ceramic (Silicon Nitride – Si3n4) balls and steel races, except they are of higher Grade 3 quality. The races are also black oxide treated and ground toa mirror finish which prevents corrosion and provides near perfect efficiency and tolerances.

• Bearing Code: 699
• Dimensions: 9mm x 20mm x 6mm
• ABEC: 5
• Grade: 3
• Seals: VV
• Grease: Kyodo Yushi PS-2
• Application: Hubs, Bottom Brackets
• Weight: 6.45g