10-Pack Loose Ceramic Balls 3.5mm = 0.1377" ZrO2 G10 Bearing Balls

3.5mm 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.

• ルーズボール
• Size: 3.5mm
• Material: Zirconia （ZrO2）（二酸化ジルコニウム）
• Quantity: Pack of 10