12mm Loose Ceramic Balls G5 Si3N4 Bearing Balls

Loose Ceramic Balls 12mm Si3N4, this is a popular size that could be used in many Bicycle, Balls are made from high-strength Ceramic Si3N4.

• Loose Balls
• Size: 12mm (31/64" Inch)
• Material: Ceramic (Si3N4)
• Quantity: One Balls