: It doesn't fit on Rinseclean mop handle, which is dual system with the clean water addition. Before use, please make sure that the three corners of the mop head refill are completely installed in the mop base and hear the "click" sound, otherwise it may come off. High Quality With Deep- Cleaning: Made of anti-abrasive microfibers, durable and machine washable.the microfiber mop head removes and absorbs tough dirt and grime easily.