I have one that is different than all of the ones showing. Has a double hook for attaching to the rocker rod, a double press down, for each side of the valve spring, for an even press and a 14' handle for pressing. I did add a copper tube and drilled holes for attachment, instead of using the rods on the heads, so not to damage them. I bought it 40 years ago and it was used then. Works great!!! Would send photo, but my computer will not read my phone (photo app.) for some reason.
Sweet. Those work great. Kim