10-Pack Loose Ceramic Balls 15mm = 0.590" G20 ZrO2 Bearing Balls

10 Loose Ceramic Balls 15mm ZrO2, this is a popular size that could be used in many Bicycle, or any application that uses this size 15mm. Balls are made from high-strength Ceramic ZrO2.

• ルーズボール
• Size: 15mm = 0.590" Inch
• Material: Zirconia （ZrO2）（二酸化ジルコニウム）
• Quantity: 10 Balls.