The Wheels Manufacturing sealed bearing units are very first quality replacement part, and fit most hubs currently in use. TECH SPECSBearing GradeABEC 3Bearing Dimensions22x37x8mmMaterialSteelNumberMR 22378
| Bearing Grade | ABEC 3 |
| Bearing Dimensions | 22x37x8mm |
| Material | Steel |
| Number | MR 22378 |
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