Koblenz P-4000 Tan 6" Floor Scrubber Brushes (#45-0233-2) - Set of 2 Discontinued The polyethylene construction provides a

The polyethylene construction provides a durable and corrosion-resistant housing

so please test an inconspicuous area before widespread use

They may harm normal tile depending on the chemical used

They are aggressive brushes for heavy duty scrubbing that may harm un-protected floors

It can also scrub

Koblenz P-4000 Tan 6" Floor Scrubber Brushes (#45-0233-2) - Set of 2 Discontinued The polyethylene construction provides aThese 6" hard floor scrubbing brushes are for use with the Koblenz P 4000 home scrubber. Great for scrubbing concrete, tile, and other hard floor surfaces. Perfect when used with a degreaser or hydrogen peroxide based cleaner for grout cleaning.