HM 702420 14 x 20" Sonic Scrub Brush by Malish. This nylon/polypropylene blend brush is designed for the deep cleaning of grout lines and uneven flooring on ceramic, quarry tile, concrete and terrazzo flooring. Fits on the newer oscillating floor machines including stick, walk behind and riders. Easy on and off hook and loop design. The sonic scrub is designed with .040" stiff poly mixed with .016" diameter nylon. Field testing done by Malish shows that this brush will outlast pads by 20:1. Priced Each. Part Number HM 702420