Scrubbing and stripping value rotary brush replaces black floor pads. Outlast floor pads 100 to 1. Made using high quality materials, are affordable and offer outstanding cleaning performance. Excellentfor scrubbing concrete and stripping quarry tile, terrasso and VCT. 0.050 inch nylon fibers impregnated with 80 grit silicon carbide. Use with Carlisle EZ Snap™ Clutch Plate that is designed for your specific machine.