The Makita Fleece Filter Bag, 5 Pack, (1910Y4-9) is for use with the 80V max (40V max X2) XGT® 10 Gallon HEPA Vacuum, Wet & Dry with AWS® (GCV07 sold separately). The Fleece Filter performs the function of a first stage pre-filter by capturing larger particles and extending the life of the main Flat Filter. The 1910Y4-9 is for use during the collection of dry debris. The Fleece Filter Bags are durable and tear resistant and come in a convenient 5 pack.