3" on the large end and 2" diameter on the small end. 1-1/8" wide.
This will accept a spring that is 2-3/8" OD down to 1-1/2" ID
1" Arbor
Much cheaper alternative than OEM from Ammco, Accuturn, FMC etc.
If you need some other sizes, let us know as we can custom make to your desires with fast turnaround!