Perfect Fit: DCV5011H HEPA filter compatible with DCV501HB 20V cordless handheld vacuum. (Please check your model carefully) HEPA Filtration: DCV5011H filter is made of pleated filter paper, traps 99.97% of dust as small as 0.3 micrometers; folded filter paper provides a larger surface area to improve airflow. Additional Foam Pre-Filter: DCV501HB filters include a foam ring gasket with excellent sealing to prevent dust leakage. Using a foam pre-filter helps keep large particles from clogging the main filter. Easy Cleaning & Washable: Filter material can be washed and reused for continued effective filtration. Rinse with water and allow to air dry completely before reinstalling. Color: As shown Material: Plastic Package Contents: 4 x DCV5011H HEPA Filter 8 x Foam Sleeve Filters 1 x Brush Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight color differences between the item and the image. Measurement allowance is +/- 1-3 cm.