The most aggressive Stripping / Scrubbing floor machine brush available. This heavy gauge nylon with larger grit is used for stripping heavily soiled floors, such as concrete floors in an industrial setting. MAL-GRIT Xtra Brushes offer solutions to a wide range of cleaning situations. Silicone carbide impregnated nylon bristles are self-replenishing as brush wears, offering unmatched value that outlasts floor pads over 100 to 1! Available in other sizes as well, upon request.