Macam reusable filter bag is made from high strength three layers polyester fleece with additional inner microfleece membrane and a non-sticky inner layer of fabric. A cost-effective solution and replaces up to 500 disposable filter bags. This filter bag is designed to vacuum dry dirt, wood chips, sawdust and other general debris. This bag lifetime will significantly decrease if used primarily for concrete, plasterboard and decorators dust. Excellent craftsmanship, reliable and robust construction will satisfy most professionals. The filter bag is ideal for professionals with environmentally friendly awareness, who have been disappointed with situations when disposable bags were torn inside the extractor, or a disposable bag is full, and the replacement is missing or left at home or workshop. This filter bag will save you a fortune.