This is a set of two 608ZZ (608Z) shielded scooter wheel bearings for the mobility scooters and power chairs. Made of carbon steel, these bearings can rotate up to 34,000 rpm. Bearings are closed with metal shields to protect the bearing from dust or any possible contamination and are self lubricated (bearings are already greased).
608ZZ bearings are one of the most widely-used bearing sizes and are used in many mobility scooter and power chair wheel assemblies. Curiously, they are also found on many skateboards, roller skates, and inline skates.
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