WARNING:
BROWN STIFF BRUSHES
They are for commercial use ONLY and require a break in period before use. Install brushes on machine and run for 3 minutes on wet concrete. Failure to break in brushes could result in breaker tripping or machine encountering difficulty on start up.
BLACK EXTRA STIFF BRUSHES
They are ONLY for tile, concrete, or other suitable hard surface cleaning, NOT for use on carpet. Severe damage will occur if used on any type of carpet.