Looped-end design lints less, reduces fraying and unraveling; four-ply premium yarn. Durable double-sewn tailband prevents tangles and provides more floor coverage with each stroke. Mop head lies flat on the floor for broad coverage. Plastic, molded cap with metal 1/4-in. threaded bolt head. Head Type: Wet Mop; Application: Floor Maintenance; Mop Head Style: Looped End. ~ Includes 12 mop heads per case.UNS824C. 824C. Unisan Pro Loop Web Mop Heads 24 oz. Mop Head.