For this 77mm ND filter，the lens cap/hood should be 86mm. 

1pcs magnetic attachment ring, 1pcs magnetic ND filter, 1pcs magnetic lens cap; 

If you rotate your ND filter past the ‘Max’ mark on the filter rim, it can cause an x-pattern, so ensure you’re not over-rotating. Variable ND filters also have limited application with wide angle lenses (they can only be used to about the halfway mark of Min and Max markings because the field of view is so broad). For a wide-angle lens, we suggest using fixed ND filters or ND2-32 or ND8-128. You can also try adjusting your focal length and reducing the density (rotating back towards the ‘Min’ mark) until the colour shift disappears. 

Not exactly sure about that lens, but don’t get this version, if you does fit. Get the their no “x” version that they offer for that lens. Not sure why this sell this Style when they offer a better one. Found that out the hard way. 

I have the 77mm version of this and I am NOT able to use a lens hood on my Canon 17-40mm wide angle once the filter is on. I haven't tried putting on the hood first and then trying to screw on the filter yet. That's not to say that all lens hoods won't work but for me it does not under the scenario described above.