Ball bearings, blue rubber sealed (5x8x2.5mm) (2)
https://www.ludingtonhobbies.com/shop/5114-ball-bearings-blue-rubber-sealed-5x8x2-5mm-2-18554
https://www.ludingtonhobbies.com/web/image/product.template/18554/image_1920?unique=7165822
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Manufacturer's Part #: 5114
