10-Pack Loose Ceramic Balls 4mm Al2O3 Alumina Oxide Bearing Balls

Loose Ceramic Balls 4mm Al2O3 (Alumina Oxide), this is a popular size that could be used in many Bicycle or any applications that uses this size 4mm. Balls are made from high-strength Ceramic Al2O3.

• Loose Balls
• Size: 4mm
• Material: Ceramic
• Quantity: Ten Ball