General size: The plastic dome diameter of our mop head is 6.3 inch (round). Fits most common mops (but not compatible with all disc mops, please read size information before purchasing !!!) and Leifheit Clean Twist disc mops are not compatible! ! ! This product has strong detergency, can remove stubborn dirt, grime and oil stains without leaving water marks, creating a tidy house. Made of microfiber fabric, washable and reusable, strong water absorption, quick drying and durable. Package contents: Contains 4 mop heads for easy cleaning and drying. Installation is quick and operation is simple. This replacement mop head is a good helper for cleaning floors, glass and cars. Versatility: The microfiber mop head is very suitable for use in dry water. Suitable for cleaning, polishing and waxing smooth surfaces, such as wooden floors, tiles, marbles, etc.