Product Information: The fully assembled pre-lubed Ultra-Pack unit features a greasing system that lets you repack bearings without removing the hub so blowing out the rear seal is no longer a concern. This new proprietary system allows you to quickly and easily insert fresh grease through the zerk fitting. Grease flows through both the inner and outer bearing, pushing old grease out the front for a complete repack.
Rubber Swivel Stem Casters 4" Wheels w/ threaded stem & mounting bolts These wheels were removed from an industrial clothing rack. They have an all steel construction with ball bearing swivels and 4" black rubber wheels. They have a 3/8" threaded stem with a 3/4" bolt.
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