Daily Cleaning Brush - Replaces Black Floor Pads. Excellent for scrubbing concrete and stripping quarry tile, terrazzo and VCT. Replaces black floor pads. Outlast floor pads 100 to 1. More efficient than floor pads. Brushes are better for the environment. Available in 11" - 20" diameter showerfeed blocks. Includes wear indicator. Irregular bristle length for optimal cleaning on uneven surfaces. .050" nylon fibers impregnated with 80 grit silicon carbide.