The Libman Big Tornado Mop Refill (#989) fits the Libman #988, which wrings out by a convenient and simple twist-and-lock mechanism. Its cotton/synthetic yarn mix resists bacterial odor, and 3 red bands prevent tangling. The quick release clip makes it easy for mop head change, and the mop head is machine washable and reusable.- Twist Mop Refill that is great for quick clean-ups on smooth surfaces and certain uneven surfaces including smooth tile.- Mop weighs less than 2.5 pounds when wet, mop head length of 10"", #16 mop head.- Dark pink and white.- 6/Carton.- Sold as 6/Carton..