[Content] 3 Pack 17810 Replacement Cartridge Filter. [17810 Filter] Compatible with most 3-4 gallon wet/dry vacuums. [Washable & Reusable] Made of heavy duty plastic material. Very durable. Gently rinse the filter with water and let it air dry completely before reinstalling. [Performance] The filter captures general debris such as sawdust, fine dust, lint, wood shavings, fine powders and cold ash. [Recommendation] Replace the filter regularly to keep your machine clean and the performance level of the vacuum cleaner remains high. Please note; The physical color difference or difference does not affect the use, please don't worry! Color: Black Material: Plastic Package Contents: 3 x 17810 Replacement Cartridge Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.