This 3-bolt round flange bearing is made of two pressed steel flanges. Insert bearings with 72mm OD fit between the two flanges and are held together with nuts and bolts (not included).

Diminisions:
For bearings with an OD of: 72mm
Bolt hole to bolt hole: 3.93 in. (100mm)
Overall length: 4.80 in. (122mm)
Bolt hole: 3/8 in.