WORKSHOP dust collection bags are designed for dry, everyday dirt and fine particle debris like drywall dust. While they are not required for a vacuum, they allow you to collect the debris and dispose of it quickly and easily without having to breathe in dust that's created when dumping a drum without a bag. Reduce vacuum maintenance time, and breathe easier with WORKSHOP dust collection bags. Fits 5 to 9-gallon WORKSHOP wet/dry vacs except the WS0500VA and WS0600SS. Includes 4 bags.