Mercury 17" Stiff Poly Scrub Brush w/ "B / 92" Clutch Plate 1904The Mercury 1904 17" Stiff Poly Scrub Brush is designed to restore the power and efficiency of your floor cleaning machine. Equipped with durable . 028 inch stiff Polypropylene bristles, this brush delivers superior scrubbing performance, making it perfect for tackling tough dirt and grime on a variety of surfaces. With a 17 inch brush block that extends to 19 inches, this brush provides excellent floor coverage, reducing cleaning time while improving