AD 56114359 Tan Gum Boost Squeegee Set for Nilfisk Advance. Fits Clarke Machines Focus II 28" and Focus II 34". Economical standard duty tan gum rubber. Used on shop flooring, warehouse flooring or any other relatively smooth surface that has light dirt and oils. Priced per set of two blades. Replaces Nilfisk Advance 56114359. Our Part Number AD 56114359