This is a complete Kodak Polycontrast filter set, with seven 3x3" mounted filters from grades 1 to 4 in half-stop increments. Yes, these are compatible with Ilford Multigrade papers: they may not produce the exact same contrast as an equivalent-grade Ilford filter, but they will definitely do the job. In excellent condition, with plastic case and filter holder for use on enlargers that don't have a built-in filter tray.