Heavy Duty Mop Heads - Our looped mop heads made with super absorbent natural cotton-synthetic blended yarn, quality material to improve floor cleaning performance; Durable, machine washable and long lasting Wide Range of Usage - These commercial grade mop heads designed for floor applications in commercial, industrial, and residential use; Scratch free, wet and dry mopping, perfect to use on various surface, such as tile floor, wood floor, laminate floor, stone floors, windows and even cars, effortlessly! Easy Replacement - These string mop heads replacements are easy to install and replace; Universal size of the commercial mop head that fit most clamps-style/side loading handles and most of the wringer basket Efficiently Clean - Our commercial mop head refill features double looped-end construction that keep mop ends from fraying, tail-band reduce tangling and wearing, which makes cleaning more efficient Package Content - 4 Pack of looped end mop head refills, adequate quanti