WI 02437 / 86000420 20" .030" Blue Poly Scrub Brush for Windsor Floor Scrubbers. General duty polypropylene filament for everyday scrubbing of tile, sealed concrete, stained concrete, quarry tile, terrazzo, vinyl and painted or epoxy painted flooring. 20" diameter block includes 6-point spring loaded clutch plate. Fits Windsor scrubbers including Saber Compact 20 (SC20, SC20T, SCX20T), Chariot I-Scrub 20 (Will not fit Compact C17J / C17BJ), and Trident TR20 (with newer larger 6 point clutch plate). For a longer wearing brush, use Nylon (WI 02438 / 86000430). One brush required on most models. Replaces Windsor 02437, 8.600-042.0 Our Part Number WI 02437, WI 86000420