100% Microfiber Spin Mop Refill: These mop heads are made of 100% super absorbent microfiber strands with a soft absorbent cord that will not scratch the floor surface. Our mop replacement head is very suitable for mopping all hard surface floors. High softness and super absorbent for easily cleaning tough dirt and grime without scratch the floor surface 10Pack Spin Mop Replacement Head: The Inner triangular rim size 3.9 inch and the outer triangular rim size is 5.7'' in diameter, Perfect replacement mop head for triangle Spin Mop system Easy to Install: Dirty mop heads can be replaced in just a few minutes; only pull the mop cord onto the mop head, and then press the mop frame to replace it until you hear a click Washable & durable Microsoft mop head: The microfiber mop head is machine washable, and you don’t have to waste any money to buy a disposable mop replacement head; just wash the mop head, and you will get a new white and fluffy mop head again Wild Applications: The microfiber spin mop heads are both for dry and wet use, which are an effective replacement for your old mop heads, perfect for mopping all hard-surface floor, such as wooden floors, ceramic tile, laminate floors, marble floors,also can be used for washing cars