Tank Brush Head, Tool Type Tank Brush Head, Bristle Material Polyester, Brush Length 8 3/8 in, Bristle Firmness Stiff, Bristle Color Black, Chemical Resistant Yes, Temperature Resistant Yes, FDA Compliant Yes, Acid Resistant Yes, Color Coding System Yes, Bristle Length 1 1/2 in, Connection Thread Type European, Handle Connection Type Threaded