Zykkor super wider semi fish-eye 0.42x fit?

It won't fit on our Nikon D300 lens which is AF-S NIKKOR 18-55mm 1:305-5.6G. We also have one old lens, Nikon LENS SERIES E 50mm 1:1.8 and we have another old lens which we know will not fit because it is a convex type of lens (Nikon LENS SERIES E 135mm 1:28)

Is their a list where zykkor super wider semi fish-eye 0.42x fit?

The fish eye adaptor has a thread size, such as 49mm or 59mm or 72mm or whatever. It should be on the lens itself. It will either have the size followed by mm or it will have the size followed by a circle with a line though it.

Same with any of your camera lenses. They will show the filter size with a number followed by the circle with a line through it.

When you know your filter size, it is a simple matter to know if it will fit certain lenses when you also know their filter size.

The fish eye does not care what kind of lens it is on. All it does is screw into matching thread sizes.