Compatibility: Only compatible with the Moosoo D600/D601 and iwoly V600 corded vacuum cleaners. Check the model number before ordering. Package contents: Compatible with the MOOSOO D600/D601 and iWOLY V600 corded vacuum cleaners. For optimal performance, change the filters at least every 2 to 3 months. HEPA filtration: Removes fine dust, dirt, sawdust, cold ash, wood chips, fine powder, and construction waste. Easy replacement: Remove the suction cup, twist it, and remove the HEPA filter. Washable and reusable: The HEPA filter is washable. Regular cleaning ensures good filtration and sufficient suction power at all times.