1. High quality-Our replacement head are made of 100% super absorbent microfiber thread, with a soft, super absorbent cord that will not scratch your clean surface. This flat head mop is very suitable for mopping all hard floors. 2. Machine washable-for Rvileda/O- spin replacement is machine washable and reusable! We recommend replacing the every 3 months. The microfiber can easily remove and absorb stubborn dirt 3. 12 Mop Replacement Heads-The set contains 12 microfiber mop replacement heads, and 2 plastic bases, (Mop handle are not included) which are enough to replace the old replacement heads. 4. Multi-- mop refill, will not scratch the floor surface. It is suitable for wooden floors, ceramic tiles, laminate floors, marble and other sealed hard floors. In addition, you can also use it to clean cars or windows. 5. Compatible with Triangular Rotating Mop-Our and cover are very suitable for the triangular rotating mop system. Perfectly compatible for Rvileda/O- rotating mop, thick and durable, dry and wet, can work easily and perfectly. color:White Material:Polyester Yarn Package Contents: 12 x Mop Replacement Heads 2 x bases Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.