Replacement sleeves are designed for the Unger® LWDUR ProDuster system (sold separately). Electrostatic charge attracts and traps dust. Chemical solution-free cleaning helps improve workplace safety. • Fits most lambswool and poly dusters. • Electrostatic charge attracts and traps dust. • Chemical solution-free cleaning helps improve workplace safety. Replacement sleeves are designed for the Unger® LWDUR ProDuster system (sold separately). Electrostatic charge attracts and traps dust. Chemical solution-free cleaning helps improve workplace safety. Bristle Material: Polyester; Bristle Color: White; Width: 7"; Length: 18".