BLACK BEARING B3 Headset Bearing - 30,15x41x6,5mm - 36°/45°

Especially for cycling, these bearings replace your original bearings.

Technical characteristics:

• Chrome steelballs SAE52100
• Chrome steel rings SAE52100
• “2RS” seals: Labyrinth seals with double lip of last generation. Better resistance to water and dust, combined with low friction.
• Ground raceways for better fluidity and longer life.
• Superior quality lubricant.
• High quality of marbles, label “ABEC 5”.
• Maintains balls by metal cage.