Servo cap tool?

[Bobarama]

I'm having trouble getting the servo cap snap rings out on my 2005 Explorer 5r55 and I found this tool that I think is a servo cap compressor for these transmissions can anyone verify that this is the proper tool?

 

[Bobarama]

I'm having trouble getting the servo cap snap rings out on my 2005 Explorer 5r55 and I found this tool that I think is a servo cap compressor for these transmissions can anyone verify that this is the proper tool?

View attachment 427586

Can it be used with the trans pan still in place?