12Pack 5 Gallon (Pure Blue) Paint and Liquid Strainer Filter Bags with Fine Mesh Blue Nylon. Each strainer filter bag has an elastic opening that can be placed and secured over the rim of a 5gallon bucket and other various container and cartridge sizes. Can also be used to strain Honey, Oat Milk and Almond Milk. Disposable paint filter bags are ideal for straining all types of paints, stains and liquids. They are perfect for filtering out and removing debris and fine particles from paint to prevent clogging when using a paint sprayer. Premium blue, very fine mesh nylon filter bags made with double stitched edges and polyester that can filter out debris and particles that are 250 microns or larger. Using a filter bag to remove unwanted debris is essential so that you can complete painting projects faster, easier and more efficiently.