Kenko Auto Extension Tube set for Canon EOS allows for use of 12, 20 and 36mm extension either by themselves or in any stacked configuration.
Works with AF and IS (image stabilized) lenses, but manual focus with IS off is always an option. I used these with a 100mm Macro L IS lens and they worked great.
Mounts are great, small marks on the body - works fine. I've gone to Nikon, so I'd also trade for the same set in Nikon.
Comes with box / instructions
US$100 / CA$115 - shipped
Photo: https://drive.google.com …UVUN5eE0/view?usp=sharing