Description About this item New Version The mop head replacement is compatible with NEW version Libman Tornado Spin Mop, not for old version Libman Spin Mop, please kindly check your bucket type before ordering. Mop Only The diameter of the inner is 10.3cm/4.05inches, the diameter of the outer is 18cm/7.08inches, and the diameter of the whole mop is 38cm/14.96inches. Standard size mop head easily installs on mop pole. Deep Cleaning The spin mop head is made of high-quality microfiber. Strong water absorption, more efficient cleaning. The thick mop head fully contact with the floor surface, easily removes over 99% of dirt. Machine Washable Mop The mop head is machine washable or hand washed in warm water. This mop refill is soft and thick, so you don’t have to worry about scratching the floor surface while cleaning. Warm Tips One mop head refill can be used for 3-4 months, and a pack of 6 can be used for about two years. The time may vary depending on your cleaning frequency and environment. The package only contains 6 mop head, not including the mop and mop bucket, please kindly noted !!!