





🚴♂️ Upgrade your ride with precision that pedals ahead!
This 4-piece bike ball bearing retainer set features 9 high-quality 1/4 inch steel balls per retainer, designed with a 29mm outer diameter and 18.4mm inner diameter. Made from durable alloy steel and ISO 355 certified, it fits a wide range of bicycles including mountain, kids, and stretch bikes. Ideal for DIY repairs, it ensures smoother crank operation and reduces noise, making it an essential upgrade for cycling enthusiasts.
| Manufacturer | Yunmoxiao |
| Item Weight | 40 g |
| Product Dimensions | 3.9 x 2.9 x 2.9 cm; 40 g |
| Material | Alloy Steel |
| Item thickness | 1 Millimetres |
| Specification met | ISO 355 |
| Batteries included? | No |
| Batteries Required? | No |
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