The FEIN 31345251010 Premium Fleece Filter Bags are made from particularly strong, tear-resistant fleece with additionally reinforced seams for collecting fine and abrasive dusts. Offering approximately 2–3 times greater effective capacity than conventional paper filter bags, this pack of five is designed for compatible FEIN Dustex 35 LX AC and Dustex 35 MX AC wet and dry dust extractors.