Disposable dust mop heads in a 40′ continuous roll. Simply cut to length to fit your dust mop frame. One inventory fits multiple frame sizes. Economical dust mop for situations where you need to dispose after one cleaning. Each carton contains a razor knife for cutting. Head Type: Dust Mop; Application: Floors; Mop Head Style: Roll; Mop Head Size: 5″ x 40 ft.