Rotary Brush, Application Scrubbing, Fits Machine Size 20 in, Shape Round, Bristle Color Gray, Brush Diameter 20 in, Trim Length 1 3/4 in, Block Size 20 in, Compatible with Manufacturer Part Number T300e, T350, Bristle Diameter 0.05 in, Compatible with Grainger Part Number 20KR12, Features Parts are Machine Specific, Tennanttrue(R) Brushes are Designed Uniquely for Tennant & Nobles Machines