Set of 2. Replacement Arbor bearings for older model Powermatic 65,66, and 68 Table Saws.
These are double sealed, double row ball bearings.
20MM (.7874") ID X 47MM (1.8504") OD X 20.6MM (.8110") Wide
Newer model 66 saws used narrower bearings. It is recommended that you measure your old bearings before ordering