1/2" =12.7mm Loose Ceramic Balls Si3N4 Bearing Balls

Loose Ceramic Balls 1/2" inch Si3N4, this is a popular size that could be used in many Bicycle, Balls are made from high-strength Ceramic Si3N4.

• Loose Balls
• Size: 1/2" Inch (12.7mm)
• Material: Ceramic (Si3N4)
• Quantity: One Balls