Smartcolor Micro Mopheads Reduce Bacteria By Up To 96 Percent To Ensure Exceptionally Clean Environments. Made From 15Mm-Pile Microfiber, Heavy-Duty Mop Head Effectively Cleans Stone And Tile Floors Without Grout Lines. High-Performance Mophead'S Aggressive Cleaning Edges Let You Clean With Less Water And Less Effort. Unger'S Smartcolor System Color-Codes Micro Mopheads A Vibrant Hue For Distinguished Use In Specialty Areas. Color-Coding Cleaning Tools Help Prevent Cross-Contamination For Cleaner Environments And Peace Of Mind. Durable, Reusable Microfiber Material Can Withstand Up To 500 Wash Cycles. Mopheads Fit Unger Sm40G And Sm40R Mop Holders (Not Included).