Dust collector is complete for most purposes the vacuum pulls through a 4” pipe or hose to a big chip collector can. Then on to the dust bag where the dust bag itself collects particulate from the collected air and the dust falls into a plastic bag. Once the big chip collector is full (a big old fashioned trash can) the plastic lid is lifted off and a commercial size plastic bag is fitted on and turned over and emptied.when the small plastic bag is full a normal trash bag will hold the contents. I mention this because a dust collector purchase does not include all this stuff and it’s not free either. I include it to save you money and time to get this stuff.