Perfect Compatibility: The mop head fits the Triangle Spin Mop. Has inner triangular rim size 4" and outer triangular rim size 5.7" in diameter.Perfect Mop Heads: Made of 100% microfiber, streak-free cleaning, effortlessly removes and absorbs dirt and stubborn grime. The red fibers absorb 20% more particles than conventional microfiber threads Easy to install: just pull the strands of the mop to unclip the head and replace it by pushing it into the red frame until you hear a click Suitable for all floors: Suitable for all types of hard floors, including wood and laminate. Product Description Easy to wash Hand wash and machine wash, reusable and more convenient Easy to install Just peel it off. insert into the mop according to the direction of the picture. When installed correctly, it is strong and durable and not easy to fall off. Premium fiber > Microfiber wicks are super absorbent, durable and won't scratch the surfaces you clean. Replacement mop head Our microfiber spinning mop refill uses the power of microfiber to give your floors a deep clean. It has soft absorbent cords that won't scratch floor surfaces. Suitable for all scenes in life Suitable for smooth floors, such as wooden floors, ceramic tiles, laminate floors, marble floors and other hard floors. You can also use this item to wash your car. Both for dry and wet use.