i honestly have no idea if this will fit your yougono 560. i use it on the sb 700. but if i recall correctly, there was a size difference in the mount between the sb 700 and sb 900 flash units. i believe they are sized for flash head actual dimensions for a proper tight fit.
Thanks Chris can you give me the demos sions? I can then check my flash to see if it fits before I order. Also there are several others for cannon vivitar etc do you know they will fit?