Neewer Flash Bounce Light Diffuser for Canon 580EXII,Neewer TT520,TT560,NW680,TT850,TT860,NW580/VK750,NW670/VK750 II,NW690/MK950II,NW910/MK910,MK900,YONGNUO YN560I/II/III/IV,YN565EX,YN568EX/EXII Note:This product is not manufactured by Canon. Note:To make the product more universal,you'll receive two diffusers in different size.Each has it's own fitting range. It's normal when one diffuser fits your flash while the other does not. Diffuse your light and make it even and more balanced Simple to set up, easy to carry!