10-Pack Loose Ceramic Balls 16.669mm = 21/32" ZrO2 G20 Bearing Balls

21/32" Loose Ceramic Balls ZrO2 (zirconium Oxide), this is a popular size that could be used in many Bicycle, Balls are made from high-strength Ceramic ZrO2.

• Loose Balls
• Size: 16.669mm = 21/32" inch
• Material: Zirconia Ceramic (ZrO2) (Zirconium dioxide)
• Quantity: Pack of 10 Balls