If your using the beveler that clamps the file through a spring-loaded screw (sells for around $35) both moonflex and regular DMT's should work (I know the DMT does because that is what I use, except my guide has the ski-man blue coloring)
No he is talking about TOKO World Cup base bevel guide. Moonstones are too wide. DMT (Regular length) work. I also use my SVST for Diamond stoning. But file work on Atomics or any ski with concave tip & tail the TOKO is the one to use.