18cm / 7.08inch Roller Length: The measured roller size the provided product specification, supporting quick swap maintenance for homes, apartments, offices and pet friendly spaces Four Piece Replacement Set: The package includes 4 roller mop refills for the compatible, so users can keep spare pads available for scheduled floor care and routine upkeep Designed For X11 Fit: Each cylindrical mop refill is X11, giving the roller interface a snug replacement option without extra trimming or Washable Nylon Texture: The dense nylon pile is built for repeated rinsing after regular cleansing tasks, helping households the mop surfaces between uses and reduce frequent replacement needs Built For Routine Floor Care: The nylon roller mop pad refills help lift everyday dusts and surfaces debris while keeping soft contacts surfaces for sealed wood, tiles, marble and other hard floors