This set of two 1621-2RS sealed mobility scooter, power chair, and manual wheelchair bearings are used on the front wheel assemblies of a variety of mobility wheels, as well on the caster wheel assemblies of some power chairs.
The 1621-2RS series are single-row, deep groove ball bearings. Heavy duty and strong, they come with a 35 mm external diameter.
Check your existing bearings for the series number, which is usually etched into the side of the bearings.
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