Tube and Pipe Brush, Bristle Material Polyester, Brush Diameter 2.5 in, Brush Length 5 1/2 in, Handle Length Not Applicable, Bristle Color Blue, Yes, Acid Yes, Application Pipes and Tubes, Bristle Firmness Stiff, Bristle Length 2 1/2 in, Brush Width 2 3/8 in, Color Coding System Yes, Compliant Yes, Handle Color Blue, Overall Length 5 5/8 in, Temperature Yes