Continuous 40 foot roll with cut-to-length convenience lets you customize your mop to fit any standard mop frame. Untreated, cut-end 4-ply cotton yarn provides excellent dust pick up; durable Typar? backing gives long life. Innovative slide-in backing secures mop on the frame. Head Type: Dust Mop; Application: Floor Maintenance; Mop Head Style: Cut End; Mop Head Size: 5" x 40 ft.