Festool 456737 Longlife Reusable Filter Bag For CT 22 Dust Extractor, 1 Piece More economical than paper filter bags, Longlife filter bags can be re-used up to 500 times Filter bag captures and contains dust and debris, helping you work cleaner and more efficiently. Integrated cap forms a tight seal during bag removal and disposal, keeping the dust contained and off the floor Traps larger chips and particles before they reach the main filter, extending the life of both the main filter and dust extractor Includes 1 Longlife reusable filter bag