Will this macro bellows kit work on an EOS 7D?

Well ,im not sure but it seems that it has the same bayonet .But i think that you have to do some controls manually depending on the ratio of the bellow length with respect to the used focal length. I mean the time exposure should be increased by the (bellow length / lens focal length)^2. Also you have to choose the min aperture that may keep the target in focus .