This is a set of two R8Z (R8ZZ) shielded mobility scooter and power chair wheel bearings. These bearings are used on the drive assemblies, articulating beams, and on the caster wheel assemblies of many power chairs.
Check your existing bearings for the series number, (R8Z, R8ZZ, R8RS), which is etched into the side of the bearings. The ZZ version of these bearings are identically sized to the RS version, with the ZZ having metal shields and the RS having black plastic shields.
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