General size: The plastic dome of our mop head has a diameter of 6.3 inches (round). Suitable for most common mops (but not compatible with all disc mops, please read the size information before purchasing!!!) Not compatible with Leifheit Clean Twist Disc Mop!!! This item has strong detergency, removes stubborn dirt, grime and grease without leaving water marks for a neat home. Made of microfiber fabric, washable and reusable, it has strong moisture absorption water, dries quickly and is durable. Package contents: contains 4 mop heads for easy cleaning and drying. Quick installation and simple operation. This replacement mop head is a great helper for cleaning floor, glass and car. Wide use: The microfiber mop heads are ideal for dry water use. Suitable for cleaning, polishing and waxing smooth surfaces such as wooden floors, tiles, marbles, etc. Sold by grid cool store