That's the garbo tool I have from that HELP rack. None of the notches line up with the rear caliper piston. I need 2 notches that are longer.Nice parts hoard you have going there.
Fwiw you can buy the compressor cube at any any autozone/advanced etc for like $10 bucks
I have a welder, I'm about to make one specific to all my cars so I never have to use these tools again.