Rotary Brush, Application Scrubbing, Fits Machine Size 20 in, Shape Round, Material Polypropylene, Bristle Material Polypropylene, Bristle Color Black, Brush Diameter 20 in, Trim Length 1 5/8 in, Block Size 18 7/8 in, Bristle Diameter 0.02 in, Compatible with Grainger Part Number 460U42, Overall Diameter Not Applicable, Series Not Applicable, Standards Not Applicable, Wear Marker No