New Ultra Smooth ModTek 5/8 Bearings, Pack of 4

Highly Polished inner race for smooth high speed performance Mounting type 5/8" bore, for use with flat free wheels up to 1-3/8" hub Id 0.625" x od 1.375" x total height 0.500". dynamic load about 4400 lb High load capacity, low friction and vibration, long service life Double sealed to prevent contaminants from entering and saving grease