Powerflite ER217 commercial-grade rugged vacum replacement brush fits Sanitaire SC880 vacum models, including SC886, SC887, etc. Vacum brushes need to be changed every 3 months . . . or your leaving nasty crud on your carpets as these brushes wear-out. Takes a minute to change. Execs and others are paying close attention to your work . . . don't get noticed for the wrong reasons. When you need it done right & fast the first time . . . .