Loose Ball Bearing 9mm = 23/64" Inch Ceramic Balls (Si3N4) One Ball Loose Ceramic Balls 9mm Si3N4, this is a popular size that could be used in many Bicycle, Balls are made of Ceramic Si3N4.
Item: Loose Balls
Size: 9mm (23/64" Inch)
Material: Ceramic (Si3N4)
Quantity: One Balls VXB Category: Loose Ceramic Balls