AD 56407505 Prematek Front Squeegee for Nilfisk Advance. Front Blade W/O Notches (3800 / BR 1100-for tile floors). Fits popular Nilfisk Advance machines such as HydroRetriever 3200, BR 850. Priced Each. Replaces Nilfisk Advance 56407505. Our Part Number AD 56407505