General Size: The plastic dome of our mop head is 6.3 inches in diameter (round). Fits most common mops (but not compatible with all disc mops, please read size info 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 tidy home. Made of microfiber fabric, washable and reusable, it has strong water 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 good helper for floor, glass and car cleaning. 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.