Head Size: 4" Width X 9" LengthMaterial: PlasticSheet Size: 3-1/4" Width X 9" LengthFits All Shop Type Vacuum Cleaners And Allows Drywall Sanding Without Harmful DustFeatures Easy-Clamp System For Faster, Easier Abrasive LoadingUniversal threading For Use With Any Extension PoleKit Includes Sanding Head, 72" Flexible Hose, 2 Coupling Adapters And Medium Grit Reversible Sanding Screen