The Fein 913036K01 Dust Bag - 3 Pack are to be used with the Fein 9-55-13 Turbo II vacuum along with a 1 Micron or HEPA filter to turn the Turbo II into a 2-Stage dust collection system. The life of your 1 Micron filter can be extended when you use the bags as a pre-filter to catch larger dust particles and helps make clean-up a breeze. Features: * Collects larger particles for two-stage dust collection * For use with Fein"s 9-55-13 Turbo II Vacuum * For use with a 1 Micron or HEPA filter * Three disposable dust bags What"s In The Box: * Fein 913036K01 Dust Bag for Turbo II - 3-Pack