High quality 5/8" pillow block bearing. The bearing has a narrow inner ring with two set screws for attaching to the shaft. Housing is pressed steel and the bearing is pre-lubed.

Diminisions:
Bore: 5/8"
Bolt hole to bolt hole: 2.677 in. (68mm)
Overall length: 3.385 in. (86mm)
Shaft height: .874 in. (22.2mm)
Overall height: 1.724 in. (43.8mm)
Bolt hole: .374 in. (9.5mm)