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The Atoplee 10pcs U Groove Sealed Guide Pulley Miniature Bearings (624ZZ4) are precision-engineered alloy steel ball bearings measuring 4mm ID, 13mm OD, and 7mm thick. Designed for low-speed, low-load applications like bicycle headset parts, their sealed U groove protects against contaminants, ensuring smooth, reliable rotation. This bulk set offers professional-grade durability and excellent customer satisfaction, making it a must-have for proactive maintenance and performance upgrades.






| ASIN | B081RC373R |
| Bearing Number | 624ZZ4 |
| Bearing Type | Ball Bearing |
| Best Sellers Rank | #267,808 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,379 in Deep-groove Ball Bearings |
| Brand | ATOPLEE |
| Brand Name | ATOPLEE |
| Compatible Lubricant | Grease |
| Customer Reviews | 4.8 out of 5 stars 21 Reviews |
| Item Thickness | 7 Millimetres |
| Manufacturer | ATOPLEE |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Outside Diameter | 13 Millimetres |
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