Mounted on castors this machine is fully mobile & the extra capacity makes it more usable with larger dust producing machinery. This is a single motor (1000W) drum machine & has a larger 50ltr capacity & filters to 0.5 microns. It is supplied complete with a castor wheel set, a 100-32mm reducer with 2m of 32mm hose, 2m of 100mm hose & easy fit machine cuff.