[Universal Compatibility]:This dust collection bag is designed to be compatible with a range of industrial vacuum models,including BF500,BF501B,BF501,NF502,and BF585-3 [Material]:Made from polyester fiber,this Vacuum Cleaner Dust Bag ensures durability and effective filtration for long term use in demanding environments [Efficient Filtration]:The advanced design of the filter bag helps take fine particles and prevents them from escaping back into the air,promoting a cleaner workspace [Easy to Replace]:The vacuum bag is easy to replace,and replace it regularly can improve cleaning performance and suction power [Package Includes]:Each purchase comes with a dust collection bag,ready to be installed and used immediately with your compatible vacuum cleaner model, Weight: 0.36596735492 pounds, Manufacturer: ALCXAZS