5mm Loose Ceramic Balls ZrO2 Bearing Balls

5mm Loose Ceramic Balls ZrO2 (zirconium Oxide), this is a popular size that could be used in many Bicycle, Balls are made of Ceramic ZrO2.

• Item: Ceramic Loose Balls
• Size: 5mm = 0.197" inch
• Material: Zirconia Ceramic (ZrO2) (Zirconium dioxide)
• Quantity: One Ball