Premium four-ply natural yarn mop lies flat on floor. Standard 1/4" threaded bolt head for easy screw-on mop head changes. Galvanized metal outerband. Use with lieflat screw-in mop handles (UNS 834, UNS 833), sold separately. 12 mop heads per case.Less linting and fraying. Double-sewn tailband for even floor coverage. 20121018sdw