Perfect Replacement: Mop heads compatible with 2 in 1 mop. It's the perfect replacement. Has inner triangular rim size of 3.9'' and outer triangular rim size 5.7'' in diameter. Perfect Mop Heads: Made of 100% microfiber, streak-free cleaning, removes and absorbs tough dirt and grime easily. Red fibers pick up 20% more particles than standard microfiber yarns Perfect installation: simply pull the mop strands to dump the head and replace by pressing the red frame until as you hear click < P> Suitable for all floors: Suitable for all types of hard floors including wood and laminate. Note: It does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. . due to manual measurement. Please allow deviation. THANKS! getveryrich Note: The data is all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain difference in color, the actual object received shall prevail.