One of the major trends in recent years has been for more and better dust collection – especially for tools that generate fine dust and silica. Dust of this type is hard on vacuums because it tends to clog the filters.
That is not a problem with this tool-activated vac because it features a pair of self-cleaning filters. Cleaning happens automatically. Every so often the machine reverses the flow of air through one of the filters; the other filter continues to draw so suction is not interrupted. One of the more interesting things about this tool is the end of the hose, which is configured to lock on to the dust ports of various DeWalt shrouds. If the tool you are using is not a DeWalt you can equip its dust port with one of several different adaptors made for that purpose.