ABI Standard Design Cartridge Bearings.
90% filled with Mobilux NGLI 2 synthetic grease, dual-lip labyrinth seals
If the bearing you are replacing is not marked with a manufacturer number, measure it and compare to specifications listed
Manufacturer Number: 6001
Bearing I.D.: 12.0 mm
Bearing O.D.: 28.0 mm
Bearing Thickness: 8 mm