Festool Longlife Filter Bag Longlife-FIS-CT 48for CT 48 Only recommended for large chips and debris. Traps larger chips and debris before they reach the main filter, extending the life of both the main filter and dust extractor. Can be refilled up to 500 times before being replaced, versus only once with a regular filter bag. Integrated cap forms a tight seal during bag removal and disposal, keeping the dust contained and off the floor. The longlife filter bag should not be used for RRP tasks.