2 Bearing 62205-2RS 25x52x18 Sealed Ball Bearings VXB Brand Deep-groove geometry for high speeds and supporting both radial and axial loads Chrome steel for durability and resistance to deformity under heavy loads CN (normal) radial internal clearance for applications that do not involve thermal expansion or atypical precision Rubber seals on both sides of the bearing keep the lubricant in and contaminants out