【Contain】5-pack CT 48 self cleaning filter bags，Self-cleaning design eliminates dust from caking inside the bag ensuring maximum suction efficiency. 【Function】These replacement bags that fits Festool (497540) bags act as a pre-filter, helping capture up to 99. 97% particles, while preventing dust from caking/ clogging inside the bag ensuring optimal efficiency 【Easy to use】 an easy-to-install design with an integrated flap that seals the bag, providing quick and easy disposal from your vacuums and compatible with Festool CT 48 dust extractors 【Effective work】 constructed of high quality, tear-resistant fleece cloth, able to capture dust particles without releasing them back into the environment 【Cost effective】 the bags help extend the life of your main filter, providing a smart solution to prevention of constant filter replacement 【Contain】5-pack CT 48 self cleaning filter bags，Self-cleaning design eliminates dust from caking inside the bag ensuring maximum suction efficiency. 【Function】These replacement bags that fits Festool (497540) bags act as a pre-filter, helping capture up to 99. 97% particles, while preventing dust from caking/ clogging inside the bag ensuring optimal efficiency 【Easy to use】 an easy-to-install design with an integrated flap that seals the bag, providing quick and easy disposal from your vacuums and compatible with Festool CT 48 dust extractors 【Effective work】 constructed of high quality, tear-resistant fleece cloth, able to capture dust particles without releasing them back into the environment 【Cost effective】 the bags help extend the life of your main filter, providing a smart solution to prevention of constant filter replacement