My Valve Spring Compressor - Heads On/In Car

Thanks guys!
I use an old plug wire with the distributor boot cut off, coiled in the cylinder. The spark plug boot eliminates worrying about it dropping in, it's easy to clean each time, and no worries about air pressure failing. It just takes some practice on where to set the cylinder before feeding it in, to get it to coil right.
Unfortunately, I don't own a welder , my buddy was nice enough to weld it up for me. Cosmetically...eh..but, the function is gorgeous! I designed it specifically to be versatile enough to overcome obstacles in any engine bay, and it works much better than anything I could have bought!