1. More durable. 2. Fine preliminary filter traps larger particles in the air like dust, hair, pet fur, lint, and more. 3. HEPA filter is made of high-strength, environmentally friendly materials, which can block most dust particles down to 0.3 micrometer. The filter helps maintain the cleaning performance of the vacuum while reducing the penetration of dust, pollen, and other allergens into the air you breathe. 4. Premium-grade HEPA filter captures 99.97% of airborne particles down to 0.3 micrometer in size. 5. Easy to replace; no tools required. Replace filters every 6 months for optimal performance. Model: For DEWALT DCV501LN/DCV501HB Type: Vacuum Cleaner Accessories Quantity: 6 Pieces Color: Black-White Material: Plastic Size: 88 x 71 mm Package Contents: 6 * HEPA Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.