[Amps] PS Filter Caps?

[Rich Hallman - N7TR]

Im looking for a place to buy Filter Caps that have screw terminals that
do not have the small plastic ring around the terminal stud.  

 

Or...is the plastic ring removable?

 

A picture of what Im looking for is the filter cap that is on the left
in the below link.

http://3870khz.blogspot.com/2008/10/henry-2k-classic-filter-caps.html

 

Tnx...

 

Rich N7TR

ex KI3V, N3AMK, WB3JOV

www.n7tr.com

Telnet: dxc.n7tr.com N7TR DXCluster