Kufo Seco DC13C, 1 Micron Canister Filter Upgrade Kit (Include 1 Top Canister Filter, 1 Bottom Plastic Bag and 2 Metal Bag Straps) 1 "" to minimize the fine dust sending to the airborne 1 micron small particle filter superior dust filtration LARGER FILTERING AREA Easy to clean by rotating the top built in brush handle Throw-away collection bag