The SNAP-RING filter bag from Eaton is not only tough enough to stand up to industrial use, but also an economical choice. These affordable filter bags are made under ISO 9001 standards to ensure that each bag serves its purpose in providing superior filtration. This product is size 4, has a Micron Rating of 10, is made of Polypropylene Felt, and features a Polypropylene Snap Ring. Sold in box quantities of 50.